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68763684160 = 2653110636521
BaseRepresentation
bin100000000001010100…
…0101000110101000000
320120111021000002101001
41000002220220311000
52111312000343120
651331204221344
74653012446203
oct1000250506500
9216437002331
1068763684160
1127187341746
12113b099a854
13663b279512
14348475193a
151bc6ceee0a
hex1002a28d40

68763684160 has 112 divisors (see below), whose sum is σ = 169210524672. Its totient is φ = 26589081600.

The previous prime is 68763684097. The next prime is 68763684163. The reversal of 68763684160 is 6148636786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68763684163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10541700 + ... + 10548220.

It is an arithmetic number, because the mean of its divisors is an integer number (1510808256).

Almost surely, 268763684160 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68763684160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84605262336).

68763684160 is an abundant number, since it is smaller than the sum of its proper divisors (100446840512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68763684160 is a wasteful number, since it uses less digits than its factorization.

68763684160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7632 (or 7622 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 68763684160 in words is "sixty-eight billion, seven hundred sixty-three million, six hundred eighty-four thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 31 32 40 62 64 80 124 155 160 248 310 320 496 620 992 1063 1240 1984 2126 2480 4252 4960 5315 6521 8504 9920 10630 13042 17008 21260 26084 32605 32953 34016 42520 52168 65210 65906 68032 85040 104336 130420 131812 164765 170080 202151 208672 260840 263624 329530 340160 404302 417344 521680 527248 659060 808604 1010755 1043360 1054496 1318120 1617208 2021510 2086720 2108992 2636240 3234416 4043020 5272480 6468832 6931823 8086040 10544960 12937664 13863646 16172080 27727292 32344160 34659115 55454584 64688320 69318230 110909168 138636460 214886513 221818336 277272920 429773026 443636672 554545840 859546052 1074432565 1109091680 1719092104 2148865130 2218183360 3438184208 4297730260 6876368416 8595460520 13752736832 17190921040 34381842080 68763684160