51155651151165 has 32 divisors (see below), whose sum is σ = 91467665396352. Its totient is φ = 24197795072000.

The previous prime is 51155651151151. The next prime is 51155651151221. The reversal of 51155651151165 is 56115115655115.

51155651151165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51155651151165 - 2²⁰ = 51155650102589 is a prime.

It is a Curzon number.

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 31 ways as a sum of consecutive naturals, for example, 3780898716 + ... + 3780912245.

It is an arithmetic number, because the mean of its divisors is an integer number (2858364543636).

Almost surely, 2^{51155651151165} is an apocalyptic number.

51155651151165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51155651151165 is a deficient number, since it is larger than the sum of its proper divisors (40312014245187).

51155651151165 is a wasteful number, since it uses less digits than its factorization.

51155651151165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7561811021.

The product of its digits is 562500, while the sum is 48.

The spelling of 51155651151165 in words is "fifty-one trillion, one hundred fifty-five billion, six hundred fifty-one million, one hundred fifty-one thousand, one hundred sixty-five".