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68764261188 = 2237818622157
BaseRepresentation
bin100000000001010101…
…0110101101101000100
320120111022002101220110
41000002222311231010
52111312122324223
651331224433020
74653020401410
oct1000252655504
9216438071813
1068764261188
11271876a6227
12113b1018770
13663b41c05c
143484861d40
151bc6db5d93
hex1002ab5b44

68764261188 has 24 divisors (see below), whose sum is σ = 183371363392. Its totient is φ = 19646931744.

The previous prime is 68764261187. The next prime is 68764261193. The reversal of 68764261188 is 88116246786.

It is not an unprimeable number, because it can be changed into a prime (68764261187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409310995 + ... + 409311162.

Almost surely, 268764261188 is an apocalyptic number.

It is an amenable number.

68764261188 is an abundant number, since it is smaller than the sum of its proper divisors (114607102204).

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

68764261188 is a wasteful number, since it uses less digits than its factorization.

68764261188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818622171 (or 818622169 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 57.

The spelling of 68764261188 in words is "sixty-eight billion, seven hundred sixty-four million, two hundred sixty-one thousand, one hundred eighty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 818622157 1637244314 2455866471 3274488628 4911732942 5730355099 9823465884 11460710198 17191065297 22921420396 34382130594 68764261188