51256337752320 has 144 divisors (see below), whose sum is σ = 163965252205440. Its totient is φ = 13646203174912.

The previous prime is 51256337752313. The next prime is 51256337752363. The reversal of 51256337752320 is 2325773365215.

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, 8447580 + ... + 13186139.

It is an arithmetic number, because the mean of its divisors is an integer number (1138647584760).

Almost surely, 2^{51256337752320} is an apocalyptic number.

It is an amenable number.

51256337752320 is an abundant number, since it is smaller than the sum of its proper divisors (112708914453120).

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

51256337752320 is a wasteful number, since it uses less digits than its factorization.

51256337752320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21634360 (or 21634346 counting only the distinct ones).

The product of its (nonzero) digits is 7938000, while the sum is 51.

The spelling of 51256337752320 in words is "fifty-one trillion, two hundred fifty-six billion, three hundred thirty-seven million, seven hundred fifty-two thousand, three hundred twenty".