72511424007 has 24 divisors (see below), whose sum is σ = 110890641792. Its totient is φ = 42035603280.

The previous prime is 72511423981. The next prime is 72511424023. The reversal of 72511424007 is 70042411527.

It is not a de Polignac number, because 72511424007 - 2¹¹ = 72511421959 is a prime.

It is a super-2 number, since 2×72511424007² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72511424077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4334173 + ... + 4350870.

It is an arithmetic number, because the mean of its divisors is an integer number (4620443408).

Almost surely, 2^72511424007 is an apocalyptic number.

72511424007 is a deficient number, since it is larger than the sum of its proper divisors (38379217785).

72511424007 is a wasteful number, since it uses less digits than its factorization.

72511424007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8685091 (or 8685080 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The spelling of 72511424007 in words is "seventy-two billion, five hundred eleven million, four hundred twenty-four thousand, seven".