51255850636 has 24 divisors (see below), whose sum is σ = 89948418560. Its totient is φ = 25556364432.

The previous prime is 51255850621. The next prime is 51255850691. The reversal of 51255850636 is 63605855215.

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, 4009591 + ... + 4022353.

Almost surely, 2^51255850636 is an apocalyptic number.

It is an amenable number.

51255850636 is a deficient number, since it is larger than the sum of its proper divisors (38692567924).

51255850636 is a wasteful number, since it uses less digits than its factorization.

51255850636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15493 (or 15491 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 51255850636 in words is "fifty-one billion, two hundred fifty-five million, eight hundred fifty thousand, six hundred thirty-six".