71025831972 has 72 divisors (see below), whose sum is σ = 190148035896. Its totient is φ = 22276813824.

The previous prime is 71025831871. The next prime is 71025832039. The reversal of 71025831972 is 27913852017.

71025831972 is a `hidden beast` number, since 7 + 10 + 258 + 319 + 72 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10910638116 + 60115193856 = 104454^2 + 245184^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2751558 + ... + 2777250.

It is an arithmetic number, because the mean of its divisors is an integer number (2640944943).

Almost surely, 2^71025831972 is an apocalyptic number.

It is an amenable number.

71025831972 is an abundant number, since it is smaller than the sum of its proper divisors (119122203924).

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

71025831972 is a wasteful number, since it uses less digits than its factorization.

71025831972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30237 (or 30232 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 71025831972 in words is "seventy-one billion, twenty-five million, eight hundred thirty-one thousand, nine hundred seventy-two".