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72715065124 = 22131782256861
BaseRepresentation
bin100001110111000100…
…1111101011100100100
320221200122020001001011
41003232021331130210
52142410024040444
653223240112004
75152642566262
oct1035611753444
9227618201034
1072715065124
1128924838749
1212114165604
136b1aaa7270
14373b44b432
151d58b6e734
hex10ee27d724

72715065124 has 24 divisors (see below), whose sum is σ = 145101104568. Its totient is φ = 31586634240.

The previous prime is 72715065121. The next prime is 72715065139. The reversal of 72715065124 is 42156051727.

It can be written as a sum of positive squares in 4 ways, for example, as 1185562624 + 71529502500 = 34432^2 + 267450^2 .

It is a super-2 number, since 2×727150651242 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72715065121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41127547 + ... + 41129314.

It is an arithmetic number, because the mean of its divisors is an integer number (6045879357).

Almost surely, 272715065124 is an apocalyptic number.

It is an amenable number.

72715065124 is a deficient number, since it is larger than the sum of its proper divisors (72386039444).

72715065124 is a wasteful number, since it uses less digits than its factorization.

72715065124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82256895 (or 82256893 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 72715065124 in words is "seventy-two billion, seven hundred fifteen million, sixty-five thousand, one hundred twenty-four".

Divisors: 1 2 4 13 17 26 34 52 68 221 442 884 82256861 164513722 329027444 1069339193 1398366637 2138678386 2796733274 4277356772 5593466548 18178766281 36357532562 72715065124