71520913194 has 64 divisors (see below), whose sum is σ = 150954935040. Its totient is φ = 22559201280.

The previous prime is 71520913181. The next prime is 71520913241. The reversal of 71520913194 is 49131902517.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1717864 + ... + 1759004.

It is an arithmetic number, because the mean of its divisors is an integer number (2358670860).

Almost surely, 2^71520913194 is an apocalyptic number.

71520913194 is an abundant number, since it is smaller than the sum of its proper divisors (79434021846).

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

71520913194 is a wasteful number, since it uses less digits than its factorization.

71520913194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41375.

The product of its (nonzero) digits is 68040, while the sum is 42.

The spelling of 71520913194 in words is "seventy-one billion, five hundred twenty million, nine hundred thirteen thousand, one hundred ninety-four".