51739216388 has 48 divisors (see below), whose sum is σ = 95668776000. Its totient is φ = 24415769088.

The previous prime is 51739216267. The next prime is 51739216409. The reversal of 51739216388 is 88361293715.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32155328 + ... + 32156936.

It is an arithmetic number, because the mean of its divisors is an integer number (1993099500).

Almost surely, 2^51739216388 is an apocalyptic number.

It is an amenable number.

51739216388 is a deficient number, since it is larger than the sum of its proper divisors (43929559612).

51739216388 is a wasteful number, since it uses less digits than its factorization.

51739216388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2964 (or 2962 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 53.

The spelling of 51739216388 in words is "fifty-one billion, seven hundred thirty-nine million, two hundred sixteen thousand, three hundred eighty-eight".