51107166165 has 32 divisors (see below), whose sum is σ = 89408563200. Its totient is φ = 24722752320.

The previous prime is 51107166163. The next prime is 51107166179. The reversal of 51107166165 is 56166170115.

It is not a de Polignac number, because 51107166165 - 2¹ = 51107166163 is a prime.

It is a super-2 number, since 2×51107166165² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51107166163) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 280345 + ... + 425214.

It is an arithmetic number, because the mean of its divisors is an integer number (2794017600).

Almost surely, 2^51107166165 is an apocalyptic number.

51107166165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51107166165 is a deficient number, since it is larger than the sum of its proper divisors (38301397035).

51107166165 is a wasteful number, since it uses less digits than its factorization.

51107166165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706017.

The product of its (nonzero) digits is 37800, while the sum is 39.

The spelling of 51107166165 in words is "fifty-one billion, one hundred seven million, one hundred sixty-six thousand, one hundred sixty-five".