51375184852257 has 24 divisors (see below), whose sum is σ = 85649530249920. Its totient is φ = 29066582656800.

The previous prime is 51375184852193. The next prime is 51375184852273. The reversal of 51375184852257 is 75225848157315.

51375184852257 is a `hidden beast` number, since 5 + 1 + 3 + 7 + 5 + 18 + 48 + 522 + 57 = 666.

It is not a de Polignac number, because 51375184852257 - 2⁶ = 51375184852193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 51375184852194 and 51375184852203.

It is not an unprimeable number, because it can be changed into a prime (51375184852297) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4037019007 + ... + 4037031732.

It is an arithmetic number, because the mean of its divisors is an integer number (3568730427080).

Almost surely, 2^{51375184852257} is an apocalyptic number.

It is an amenable number.

51375184852257 is a deficient number, since it is larger than the sum of its proper divisors (34274345397663).

51375184852257 is a wasteful number, since it uses less digits than its factorization.

51375184852257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8074050853 (or 8074050850 counting only the distinct ones).

The product of its digits is 94080000, while the sum is 63.

The spelling of 51375184852257 in words is "fifty-one trillion, three hundred seventy-five billion, one hundred eighty-four million, eight hundred fifty-two thousand, two hundred fifty-seven".