71393697256 has 32 divisors (see below), whose sum is σ = 153017988480. Its totient is φ = 30591000000.

The previous prime is 71393697229. The next prime is 71393697313. The reversal of 71393697256 is 65279639317.

It is a self number, because there is not a number n which added to its sum of digits gives 71393697256.

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, 148506 + ... + 406006.

It is an arithmetic number, because the mean of its divisors is an integer number (4781812140).

Almost surely, 2^71393697256 is an apocalyptic number.

It is an amenable number.

71393697256 is an abundant number, since it is smaller than the sum of its proper divisors (81624291224).

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

71393697256 is a wasteful number, since it uses less digits than its factorization.

71393697256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262465 (or 262461 counting only the distinct ones).

The product of its digits is 12859560, while the sum is 58.

The spelling of 71393697256 in words is "seventy-one billion, three hundred ninety-three million, six hundred ninety-seven thousand, two hundred fifty-six".