51913360800 has 216 divisors, whose sum is σ = 209211047136. Its totient is φ = 11865899520.

The previous prime is 51913360799. The next prime is 51913360843. The reversal of 51913360800 is 806331915.

It is a happy number.

51913360800 is a `hidden beast` number, since 5 + 19 + 1 + 33 + 608 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 464614 + ... + 565413.

Almost surely, 2^51913360800 is an apocalyptic number.

51913360800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51913360800 is an abundant number, since it is smaller than the sum of its proper divisors (157297686336).

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

51913360800 is a wasteful number, since it uses less digits than its factorization.

51913360800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030060 (or 1030044 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 51913360800 in words is "fifty-one billion, nine hundred thirteen million, three hundred sixty thousand, eight hundred".