71912630988 has 72 divisors (see below), whose sum is σ = 209969519760. Its totient is φ = 20509839360.

The previous prime is 71912630953. The next prime is 71912631001. The reversal of 71912630988 is 88903621917.

It is a super-2 number, since 2×71912630988² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5334373 + ... + 5347836.

It is an arithmetic number, because the mean of its divisors is an integer number (2916243330).

Almost surely, 2^71912630988 is an apocalyptic number.

It is an amenable number.

71912630988 is an abundant number, since it is smaller than the sum of its proper divisors (138056888772).

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

71912630988 is a wasteful number, since it uses less digits than its factorization.

71912630988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10682247 (or 10682242 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 71912630988 in words is "seventy-one billion, nine hundred twelve million, six hundred thirty thousand, nine hundred eighty-eight".