51086120031817 has 8 divisors (see below), whose sum is σ = 55276560066560. Its totient is φ = 46932928353360.

The previous prime is 51086120031799. The next prime is 51086120031827. The reversal of 51086120031817 is 71813002168015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51086120031817 - 2³⁵ = 51051760293449 is a prime.

It is a super-2 number, since 2×51086120031817² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51086120031827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9312086217 + ... + 9312091702.

It is an arithmetic number, because the mean of its divisors is an integer number (6909570008320).

Almost surely, 2^{51086120031817} is an apocalyptic number.

It is an amenable number.

51086120031817 is a deficient number, since it is larger than the sum of its proper divisors (4190440034743).

51086120031817 is a wasteful number, since it uses less digits than its factorization.

51086120031817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18624178143.

The product of its (nonzero) digits is 80640, while the sum is 43.

The spelling of 51086120031817 in words is "fifty-one trillion, eighty-six billion, one hundred twenty million, thirty-one thousand, eight hundred seventeen".