71979626084 has 24 divisors (see below), whose sum is σ = 133405996248. Its totient is φ = 33864642560.

The previous prime is 71979626077. The next prime is 71979626189. The reversal of 71979626084 is 48062697917.

It can be written as a sum of positive squares in 4 ways, for example, as 54066480484 + 17913145600 = 232522^2 + 133840^2 .

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, 163592 + ... + 413184.

It is an arithmetic number, because the mean of its divisors is an integer number (5558583177).

Almost surely, 2^71979626084 is an apocalyptic number.

It is an amenable number.

71979626084 is a deficient number, since it is larger than the sum of its proper divisors (61426370164).

71979626084 is a wasteful number, since it uses less digits than its factorization.

71979626084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253855 (or 253853 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 59.

The spelling of 71979626084 in words is "seventy-one billion, nine hundred seventy-nine million, six hundred twenty-six thousand, eighty-four".