51787615167 has 16 divisors (see below), whose sum is σ = 76731523680. Its totient is φ = 34520967936.

The previous prime is 51787615153. The next prime is 51787615211. The reversal of 51787615167 is 76151678715.

51787615167 is a `hidden beast` number, since 5 + 1 + 7 + 8 + 7 + 615 + 16 + 7 = 666.

It is not a de Polignac number, because 51787615167 - 2¹⁶ = 51787549631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51787615147) 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 15 ways as a sum of consecutive naturals, for example, 126133 + ... + 345665.

It is an arithmetic number, because the mean of its divisors is an integer number (4795720230).

Almost surely, 2^51787615167 is an apocalyptic number.

51787615167 is a deficient number, since it is larger than the sum of its proper divisors (24943908513).

51787615167 is a wasteful number, since it uses less digits than its factorization.

51787615167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228279 (or 228273 counting only the distinct ones).

The product of its digits is 2469600, while the sum is 54.

The spelling of 51787615167 in words is "fifty-one billion, seven hundred eighty-seven million, six hundred fifteen thousand, one hundred sixty-seven".