51687873706131 has 24 divisors (see below), whose sum is σ = 82364416645056. Its totient is φ = 31032119295360.

The previous prime is 51687873706099. The next prime is 51687873706163. The reversal of 51687873706131 is 13160737878615.

51687873706131 is a `hidden beast` number, since 5 + 1 + 6 + 8 + 7 + 8 + 7 + 3 + 7 + 0 + 613 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (51687873706099) and next prime (51687873706163).

It is not a de Polignac number, because 51687873706131 - 2⁵ = 51687873706099 is a prime.

It is a super-2 number, since 2×51687873706131² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51687873706031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5387515915 + ... + 5387525508.

It is an arithmetic number, because the mean of its divisors is an integer number (3431850693544).

Almost surely, 2^{51687873706131} is an apocalyptic number.

51687873706131 is a deficient number, since it is larger than the sum of its proper divisors (30676542938925).

51687873706131 is a wasteful number, since it uses less digits than its factorization.

51687873706131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10775041483 (or 10775041480 counting only the distinct ones).

The product of its (nonzero) digits is 35562240, while the sum is 63.

The spelling of 51687873706131 in words is "fifty-one trillion, six hundred eighty-seven billion, eight hundred seventy-three million, seven hundred six thousand, one hundred thirty-one".