51161646647400 has 96 divisors (see below), whose sum is σ = 166948531202400. Its totient is φ = 12925047571200.

The previous prime is 51161646647357. The next prime is 51161646647437. The reversal of 51161646647400 is 474664616115.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2243920471 + ... + 2243943270.

It is an arithmetic number, because the mean of its divisors is an integer number (1739047200025).

Almost surely, 2^{51161646647400} is an apocalyptic number.

51161646647400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51161646647400 is an abundant number, since it is smaller than the sum of its proper divisors (115786884555000).

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

51161646647400 is a wasteful number, since it uses less digits than its factorization.

51161646647400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487863779 (or 4487863770 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 51161646647400 in words is "fifty-one trillion, one hundred sixty-one billion, six hundred forty-six million, six hundred forty-seven thousand, four hundred".