51696862472 has 32 divisors (see below), whose sum is σ = 98655840000. Its totient is φ = 25389361728.

The previous prime is 51696862397. The next prime is 51696862507. The reversal of 51696862472 is 27426869615.

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, 535529 + ... + 624647.

It is an arithmetic number, because the mean of its divisors is an integer number (3082995000).

Almost surely, 2^51696862472 is an apocalyptic number.

It is an amenable number.

51696862472 is a deficient number, since it is larger than the sum of its proper divisors (46958977528).

51696862472 is a wasteful number, since it uses less digits than its factorization.

51696862472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90413 (or 90409 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The spelling of 51696862472 in words is "fifty-one billion, six hundred ninety-six million, eight hundred sixty-two thousand, four hundred seventy-two".