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68977654704 = 2434710373819
BaseRepresentation
bin100000000111101100…
…0110111101110110000
320121001011121220210000
41000033120313232300
52112231234422304
651404330310000
74661221251060
oct1001730675660
9217034556700
1068977654704
11272870a6a02
1211450588300
1366736b56ca
1434a4d2d3a0
151bda9b8939
hex100f637bb0

68977654704 has 200 divisors, whose sum is σ = 230379818240. Its totient is φ = 19516298112.

The previous prime is 68977654639. The next prime is 68977654709. The reversal of 68977654704 is 40745677986.

68977654704 is a `hidden beast` number, since 6 + 8 + 97 + 76 + 5 + 470 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (68977654709) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 897507 + ... + 971325.

Almost surely, 268977654704 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 68977654704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115189909120).

68977654704 is an abundant number, since it is smaller than the sum of its proper divisors (161402163536).

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

68977654704 is a wasteful number, since it uses less digits than its factorization.

68977654704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73949 (or 73934 counting only the distinct ones).

The product of its (nonzero) digits is 71124480, while the sum is 63.

The spelling of 68977654704 in words is "sixty-eight billion, nine hundred seventy-seven million, six hundred fifty-four thousand, seven hundred four".