51187620160 has 56 divisors (see below), whose sum is σ = 129060564840. Its totient is φ = 19270631424.

The previous prime is 51187620151. The next prime is 51187620173. The reversal of 51187620160 is 6102678115.

It can be written as a sum of positive squares in 4 ways, for example, as 501401664 + 50686218496 = 22392^2 + 225136^2 .

It is a congruent number.

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, 4699305 + ... + 4710184.

Almost surely, 2^51187620160 is an apocalyptic number.

It is an amenable number.

51187620160 is an abundant number, since it is smaller than the sum of its proper divisors (77872944680).

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

51187620160 is a wasteful number, since it uses less digits than its factorization.

51187620160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9409523 (or 9409513 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 51187620160 in words is "fifty-one billion, one hundred eighty-seven million, six hundred twenty thousand, one hundred sixty".