71425708172 has 24 divisors (see below), whose sum is σ = 153839987616. Its totient is φ = 28256323968.

The previous prime is 71425708147. The next prime is 71425708201. The reversal of 71425708172 is 27180752417.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98111873 + ... + 98112600.

It is an arithmetic number, because the mean of its divisors is an integer number (6409999484).

Almost surely, 2^71425708172 is an apocalyptic number.

It is an amenable number.

71425708172 is an abundant number, since it is smaller than the sum of its proper divisors (82414279444).

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

71425708172 is a wasteful number, since it uses less digits than its factorization.

71425708172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196224497 (or 196224495 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 44.

The spelling of 71425708172 in words is "seventy-one billion, four hundred twenty-five million, seven hundred eight thousand, one hundred seventy-two".