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68804097708 = 22361439721377
BaseRepresentation
bin100000000010100001…
…0110011011010101100
320120121002001022100010
41000011002303122230
52111402322111313
651335210333220
74654013116023
oct1000502633254
9216532038303
1068804097708
11271a8134a75
121140242a210
136646759368
143489c718ba
151bca6344c3
hex10050b36ac

68804097708 has 48 divisors (see below), whose sum is σ = 163219490784. Its totient is φ = 22552535040.

The previous prime is 68804097623. The next prime is 68804097709. The reversal of 68804097708 is 80779040886.

It is a super-2 number, since 2×688040977082 (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (68804097709) 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, 3207916 + ... + 3229292.

It is an arithmetic number, because the mean of its divisors is an integer number (3400406058).

Almost surely, 268804097708 is an apocalyptic number.

It is an amenable number.

68804097708 is an abundant number, since it is smaller than the sum of its proper divisors (94415393076).

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

68804097708 is a wasteful number, since it uses less digits than its factorization.

68804097708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25842 (or 25840 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 57.

The spelling of 68804097708 in words is "sixty-eight billion, eight hundred four million, ninety-seven thousand, seven hundred eight".

Divisors: 1 2 3 4 6 12 61 122 183 244 366 732 4397 8794 13191 17588 21377 26382 42754 52764 64131 85508 128262 256524 268217 536434 804651 1072868 1303997 1609302 2607994 3218604 3911991 5215988 7823982 15647964 93994669 187989338 281984007 375978676 563968014 1127936028 5733674809 11467349618 17201024427 22934699236 34402048854 68804097708