71556164023 has 16 divisors (see below), whose sum is σ = 78208187904. Its totient is φ = 65194053120.

The previous prime is 71556164003. The next prime is 71556164039. The reversal of 71556164023 is 32046165517.

It is a cyclic number.

It is not a de Polignac number, because 71556164023 - 2²⁵ = 71522609591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71556164003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164823 + ... + 412648.

It is an arithmetic number, because the mean of its divisors is an integer number (4888011744).

Almost surely, 2^71556164023 is an apocalyptic number.

71556164023 is a deficient number, since it is larger than the sum of its proper divisors (6652023881).

71556164023 is a wasteful number, since it uses less digits than its factorization.

71556164023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577722.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 71556164023 in words is "seventy-one billion, five hundred fifty-six million, one hundred sixty-four thousand, twenty-three".