71566534704 has 40 divisors (see below), whose sum is σ = 211291674880. Its totient is φ = 20447581248.

The previous prime is 71566534687. The next prime is 71566534727. The reversal of 71566534704 is 40743566517.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 106497484 + ... + 106498155.

It is an arithmetic number, because the mean of its divisors is an integer number (5282291872).

Almost surely, 2^71566534704 is an apocalyptic number.

It is an amenable number.

71566534704 is an abundant number, since it is smaller than the sum of its proper divisors (139725140176).

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

71566534704 is a wasteful number, since it uses less digits than its factorization.

71566534704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212995657 (or 212995651 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 48.

The spelling of 71566534704 in words is "seventy-one billion, five hundred sixty-six million, five hundred thirty-four thousand, seven hundred four".