51736854171 has 64 divisors (see below), whose sum is σ = 74782365696. Its totient is φ = 31701196800.

The previous prime is 51736854167. The next prime is 51736854173. The reversal of 51736854171 is 17145863715.

It is not a de Polignac number, because 51736854171 - 2² = 51736854167 is a prime.

It is a super-2 number, since 2×51736854171² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51736854171.

It is not an unprimeable number, because it can be changed into a prime (51736854173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 190910766 + ... + 190911036.

It is an arithmetic number, because the mean of its divisors is an integer number (1168474464).

Almost surely, 2^51736854171 is an apocalyptic number.

51736854171 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

51736854171 is a deficient number, since it is larger than the sum of its proper divisors (23045511525).

51736854171 is a wasteful number, since it uses less digits than its factorization.

51736854171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772.

The product of its digits is 705600, while the sum is 48.

The spelling of 51736854171 in words is "fifty-one billion, seven hundred thirty-six million, eight hundred fifty-four thousand, one hundred seventy-one".