51872333856 has 48 divisors (see below), whose sum is σ = 155617003584. Its totient is φ = 14820666624.

The previous prime is 51872333833. The next prime is 51872333879. The reversal of 51872333856 is 65833327815.

It is an interprime number because it is at equal distance from previous prime (51872333833) and next prime (51872333879).

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 51872333799 and 51872333808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38594815 + ... + 38596158.

It is an arithmetic number, because the mean of its divisors is an integer number (3242020908).

Almost surely, 2^51872333856 is an apocalyptic number.

51872333856 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51872333856 is an abundant number, since it is smaller than the sum of its proper divisors (103744669728).

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

51872333856 is a wasteful number, since it uses less digits than its factorization.

51872333856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77190993 (or 77190985 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 51.

The spelling of 51872333856 in words is "fifty-one billion, eight hundred seventy-two million, three hundred thirty-three thousand, eight hundred fifty-six".