72511731434755 has 8 divisors (see below), whose sum is σ = 87106547523024. Its totient is φ = 57947738613600.

The previous prime is 72511731434677. The next prime is 72511731434809. The reversal of 72511731434755 is 55743413711527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72511731434755 - 2³⁹ = 71961975620867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72511731434696 and 72511731434705.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7705811601 + ... + 7705821010.

It is an arithmetic number, because the mean of its divisors is an integer number (10888318440378).

Almost surely, 2^{72511731434755} is an apocalyptic number.

72511731434755 is a deficient number, since it is larger than the sum of its proper divisors (14594816088269).

72511731434755 is a wasteful number, since it uses less digits than its factorization.

72511731434755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15411633557.

The product of its digits is 12348000, while the sum is 55.

The spelling of 72511731434755 in words is "seventy-two trillion, five hundred eleven billion, seven hundred thirty-one million, four hundred thirty-four thousand, seven hundred fifty-five".