71252987736 has 64 divisors (see below), whose sum is σ = 204717369600. Its totient is φ = 20244256128.

The previous prime is 71252987719. The next prime is 71252987777. The reversal of 71252987736 is 63778925217.

It is a super-2 number, since 2×71252987736² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1154635 + ... + 1214778.

It is an arithmetic number, because the mean of its divisors is an integer number (3198708900).

Almost surely, 2^71252987736 is an apocalyptic number.

It is an amenable number.

71252987736 is an abundant number, since it is smaller than the sum of its proper divisors (133464381864).

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

71252987736 is a wasteful number, since it uses less digits than its factorization.

71252987736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369608 (or 2369604 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 57.

The spelling of 71252987736 in words is "seventy-one billion, two hundred fifty-two million, nine hundred eighty-seven thousand, seven hundred thirty-six".