71982152256 has 56 divisors (see below), whose sum is σ = 217660321600. Its totient is φ = 20566328832.

The previous prime is 71982152183. The next prime is 71982152273. The reversal of 71982152256 is 65225128917.

It is a tau number, because it is divible by the number of its divisors (56).

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, 26777731 + ... + 26780418.

Almost surely, 2^71982152256 is an apocalyptic number.

It is an amenable number.

71982152256 is an abundant number, since it is smaller than the sum of its proper divisors (145678169344).

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

71982152256 is a wasteful number, since it uses less digits than its factorization.

71982152256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53558171 (or 53558161 counting only the distinct ones).

The product of its digits is 604800, while the sum is 48.

The spelling of 71982152256 in words is "seventy-one billion, nine hundred eighty-two million, one hundred fifty-two thousand, two hundred fifty-six".