51507323135 has 4 divisors (see below), whose sum is σ = 61808787768. Its totient is φ = 41205858504.

The previous prime is 51507323123. The next prime is 51507323177. The reversal of 51507323135 is 53132370515.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51507323135 - 2¹⁴ = 51507306751 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51507323095 and 51507323104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5150732309 + ... + 5150732318.

It is an arithmetic number, because the mean of its divisors is an integer number (15452196942).

Almost surely, 2^51507323135 is an apocalyptic number.

51507323135 is a deficient number, since it is larger than the sum of its proper divisors (10301464633).

51507323135 is a wasteful number, since it uses less digits than its factorization.

51507323135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10301464632.

The product of its (nonzero) digits is 47250, while the sum is 35.

The spelling of 51507323135 in words is "fifty-one billion, five hundred seven million, three hundred twenty-three thousand, one hundred thirty-five".