51723495165 has 16 divisors (see below), whose sum is σ = 82784808000. Its totient is φ = 27576792192.

The previous prime is 51723495149. The next prime is 51723495169. The reversal of 51723495165 is 56159432715.

It is not a de Polignac number, because 51723495165 - 2⁴ = 51723495149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51723495169) 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, 519735 + ... + 611204.

It is an arithmetic number, because the mean of its divisors is an integer number (5174050500).

Almost surely, 2^51723495165 is an apocalyptic number.

It is an amenable number.

51723495165 is a deficient number, since it is larger than the sum of its proper divisors (31061312835).

51723495165 is a wasteful number, since it uses less digits than its factorization.

51723495165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133996.

The product of its digits is 1134000, while the sum is 48.

The spelling of 51723495165 in words is "fifty-one billion, seven hundred twenty-three million, four hundred ninety-five thousand, one hundred sixty-five".