51656500160 has 28 divisors (see below), whose sum is σ = 123007041768. Its totient is φ = 20662599936.

The previous prime is 51656500139. The next prime is 51656500187. The reversal of 51656500160 is 6100565615.

It is a self number, because there is not a number n which added to its sum of digits gives 51656500160.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80712962 + ... + 80713601.

Almost surely, 2^51656500160 is an apocalyptic number.

It is an amenable number.

51656500160 is an abundant number, since it is smaller than the sum of its proper divisors (71350541608).

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

51656500160 is a wasteful number, since it uses less digits than its factorization.

51656500160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161426580 (or 161426570 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 51656500160 in words is "fifty-one billion, six hundred fifty-six million, five hundred thousand, one hundred sixty".