51851408807400 has 48 divisors (see below), whose sum is σ = 160739367304800. Its totient is φ = 13827042348480.

The previous prime is 51851408807371. The next prime is 51851408807413. The reversal of 51851408807400 is 470880415815.

51851408807400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43209506740 + ... + 43209507939.

It is an arithmetic number, because the mean of its divisors is an integer number (3348736818850).

Almost surely, 2^{51851408807400} is an apocalyptic number.

51851408807400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51851408807400 is an abundant number, since it is smaller than the sum of its proper divisors (108887958497400).

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

51851408807400 is a wasteful number, since it uses less digits than its factorization.

51851408807400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86419014698 (or 86419014689 counting only the distinct ones).

The product of its (nonzero) digits is 1433600, while the sum is 51.

The spelling of 51851408807400 in words is "fifty-one trillion, eight hundred fifty-one billion, four hundred eight million, eight hundred seven thousand, four hundred".