71775994452 has 12 divisors (see below), whose sum is σ = 167477320416. Its totient is φ = 23925331480.

The previous prime is 71775994421. The next prime is 71775994471. The reversal of 71775994452 is 25449957717.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2990666424 + ... + 2990666447.

It is an arithmetic number, because the mean of its divisors is an integer number (13956443368).

Almost surely, 2^71775994452 is an apocalyptic number.

It is an amenable number.

71775994452 is an abundant number, since it is smaller than the sum of its proper divisors (95701325964).

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

71775994452 is a wasteful number, since it uses less digits than its factorization.

71775994452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5981332878 (or 5981332876 counting only the distinct ones).

The product of its digits is 22226400, while the sum is 60.

The spelling of 71775994452 in words is "seventy-one billion, seven hundred seventy-five million, nine hundred ninety-four thousand, four hundred fifty-two".