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68769506900 = 22521973348553
BaseRepresentation
bin100000000001011111…
…0110110011001010100
320120111122221220200002
41000002332312121110
52111314443210100
651331533110432
74653113110133
oct1000276663124
9216448856602
1068769506900
112718a659426
12113b2928418
13663c537923
14348542991a
151bc75a02d5
hex1002fb6654

68769506900 has 36 divisors (see below), whose sum is σ = 149305894332. Its totient is φ = 27493781760.

The previous prime is 68769506879. The next prime is 68769506947. The reversal of 68769506900 is 960596786.

It can be written as a sum of positive squares in 6 ways, for example, as 5982916 + 68763523984 = 2446^2 + 262228^2 .

It is a super-2 number, since 2×687695069002 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23024 + ... + 371576.

Almost surely, 268769506900 is an apocalyptic number.

It is an amenable number.

68769506900 is an abundant number, since it is smaller than the sum of its proper divisors (80536387432).

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

68769506900 is a wasteful number, since it uses less digits than its factorization.

68769506900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350540 (or 350533 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 56.

The spelling of 68769506900 in words is "sixty-eight billion, seven hundred sixty-nine million, five hundred six thousand, nine hundred".

Divisors: 1 2 4 5 10 20 25 50 100 1973 3946 7892 9865 19730 39460 49325 98650 197300 348553 697106 1394212 1742765 3485530 6971060 8713825 17427650 34855300 687695069 1375390138 2750780276 3438475345 6876950690 13753901380 17192376725 34384753450 68769506900