51810553875 has 16 divisors (see below), whose sum is σ = 86212762272. Its totient is φ = 27632295200.

The previous prime is 51810553853. The next prime is 51810553877. The reversal of 51810553875 is 57835501815.

It is not a de Polignac number, because 51810553875 - 2⁶ = 51810553811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51810553877) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 69080364 + ... + 69081113.

It is an arithmetic number, because the mean of its divisors is an integer number (5388297642).

Almost surely, 2^51810553875 is an apocalyptic number.

51810553875 is a deficient number, since it is larger than the sum of its proper divisors (34402208397).

51810553875 is a wasteful number, since it uses less digits than its factorization.

51810553875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138161495 (or 138161485 counting only the distinct ones).

The product of its (nonzero) digits is 840000, while the sum is 48.

The spelling of 51810553875 in words is "fifty-one billion, eight hundred ten million, five hundred fifty-three thousand, eight hundred seventy-five".