51217276800 has 96 divisors (see below), whose sum is σ = 168696937080. Its totient is φ = 13657937920.

The previous prime is 51217276769. The next prime is 51217276819. The reversal of 51217276800 is 867271215.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2657967 + ... + 2677166.

Almost surely, 2^51217276800 is an apocalyptic number.

51217276800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51217276800 is an abundant number, since it is smaller than the sum of its proper divisors (117479660280).

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

51217276800 is a wasteful number, since it uses less digits than its factorization.

51217276800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5335160 (or 5335143 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 39.

The spelling of 51217276800 in words is "fifty-one billion, two hundred seventeen million, two hundred seventy-six thousand, eight hundred".