51604135169 has 16 divisors (see below), whose sum is σ = 52876824000. Its totient is φ = 50345910720.

The previous prime is 51604135157. The next prime is 51604135199. The reversal of 51604135169 is 96153140615.

It is a cyclic number.

It is not a de Polignac number, because 51604135169 - 2²⁰ = 51603086593 is a prime.

It is a super-2 number, since 2×51604135169² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51604135199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12114362 + ... + 12118620.

It is an arithmetic number, because the mean of its divisors is an integer number (3304801500).

Almost surely, 2^51604135169 is an apocalyptic number.

It is an amenable number.

51604135169 is a deficient number, since it is larger than the sum of its proper divisors (1272688831).

51604135169 is a wasteful number, since it uses less digits than its factorization.

51604135169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5888.

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 51604135169 in words is "fifty-one billion, six hundred four million, one hundred thirty-five thousand, one hundred sixty-nine".