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71862664164 = 22343169981971
BaseRepresentation
bin100001011101101011…
…0010011101111100100
320212111020021120202020
41002323112103233210
52134133320223124
653002510143140
75122552365264
oct1027326235744
9225436246666
1071862664164
1128527667245
1211b167b1ab0
136a133081b5
14369a1617a4
151d08de6379
hex10bb593be4

71862664164 has 48 divisors (see below), whose sum is σ = 171682156800. Its totient is φ = 23383090080.

The previous prime is 71862664141. The next prime is 71862664169. The reversal of 71862664164 is 46146626817.

It is not an unprimeable number, because it can be changed into a prime (71862664169) 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, 835699 + ... + 917669.

It is an arithmetic number, because the mean of its divisors is an integer number (3576711600).

Almost surely, 271862664164 is an apocalyptic number.

It is an amenable number.

71862664164 is an abundant number, since it is smaller than the sum of its proper divisors (99819492636).

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

71862664164 is a wasteful number, since it uses less digits than its factorization.

71862664164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83720 (or 83718 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The spelling of 71862664164 in words is "seventy-one billion, eight hundred sixty-two million, six hundred sixty-four thousand, one hundred sixty-four".

Divisors: 1 2 3 4 6 12 43 86 129 172 258 516 1699 3398 5097 6796 10194 20388 73057 81971 146114 163942 219171 245913 292228 327884 438342 491826 876684 983652 3524753 7049506 10574259 14099012 21148518 42297036 139268729 278537458 417806187 557074916 835612374 1671224748 5988555347 11977110694 17965666041 23954221388 35931332082 71862664164