51289875135 has 24 divisors (see below), whose sum is σ = 92195135760. Its totient is φ = 27354599424.

The previous prime is 51289875127. The next prime is 51289875137. The reversal of 51289875135 is 53157898215.

51289875135 is a `hidden beast` number, since 512 + 8 + 98 + 7 + 5 + 1 + 35 = 666.

It is not a de Polignac number, because 51289875135 - 2³ = 51289875127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51289875137) 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, 21105730 + ... + 21108159.

It is an arithmetic number, because the mean of its divisors is an integer number (3841463990).

Almost surely, 2^51289875135 is an apocalyptic number.

51289875135 is a deficient number, since it is larger than the sum of its proper divisors (40905260625).

51289875135 is an equidigital number, since it uses as much as digits as its factorization.

51289875135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42213909 (or 42213897 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 54.

The spelling of 51289875135 in words is "fifty-one billion, two hundred eighty-nine million, eight hundred seventy-five thousand, one hundred thirty-five".