51956356366017 has 48 divisors (see below), whose sum is σ = 76257153288576. Its totient is φ = 34081538400000.

The previous prime is 51956356365959. The next prime is 51956356366097. The reversal of 51956356366017 is 71066365365915.

51956356366017 is a `hidden beast` number, since 5 + 1 + 9 + 5 + 6 + 3 + 563 + 6 + 60 + 1 + 7 = 666.

It is not a de Polignac number, because 51956356366017 - 2²⁰ = 51956355317441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51956356366097) 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 47 ways as a sum of consecutive naturals, for example, 806705938 + ... + 806770340.

It is an arithmetic number, because the mean of its divisors is an integer number (1588690693512).

Almost surely, 2^{51956356366017} is an apocalyptic number.

It is an amenable number.

51956356366017 is a deficient number, since it is larger than the sum of its proper divisors (24300796922559).

51956356366017 is a wasteful number, since it uses less digits than its factorization.

51956356366017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66982 (or 66979 counting only the distinct ones).

The product of its (nonzero) digits is 91854000, while the sum is 63.

The spelling of 51956356366017 in words is "fifty-one trillion, nine hundred fifty-six billion, three hundred fifty-six million, three hundred sixty-six thousand, seventeen".