51656671701 has 8 divisors (see below), whose sum is σ = 76528402560. Its totient is φ = 34437781116.

The previous prime is 51656671621. The next prime is 51656671711. The reversal of 51656671701 is 10717665615.

51656671701 is a `hidden beast` number, since 5 + 16 + 566 + 7 + 1 + 70 + 1 = 666.

It is not a de Polignac number, because 51656671701 - 2¹⁵ = 51656638933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51656671711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956605005 + ... + 956605058.

It is an arithmetic number, because the mean of its divisors is an integer number (9566050320).

Almost surely, 2^51656671701 is an apocalyptic number.

It is an amenable number.

51656671701 is a deficient number, since it is larger than the sum of its proper divisors (24871730859).

51656671701 is a wasteful number, since it uses less digits than its factorization.

51656671701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913210072 (or 1913210066 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 45.

The spelling of 51656671701 in words is "fifty-one billion, six hundred fifty-six million, six hundred seventy-one thousand, seven hundred one".