87914681631 has 12 divisors (see below), whose sum is σ = 145128998352. Its totient is φ = 50236960896.

The previous prime is 87914681593. The next prime is 87914681639. The reversal of 87914681631 is 13618641978.

87914681631 is a `hidden beast` number, since 87 + 91 + 468 + 16 + 3 + 1 = 666.

It is not a de Polignac number, because 87914681631 - 2⁶ = 87914681567 is a prime.

It is a super-2 number, since 2×87914681631² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87914681639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 697735506 + ... + 697735631.

It is an arithmetic number, because the mean of its divisors is an integer number (12094083196).

Almost surely, 2^87914681631 is an apocalyptic number.

87914681631 is a deficient number, since it is larger than the sum of its proper divisors (57214316721).

87914681631 is a wasteful number, since it uses less digits than its factorization.

87914681631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395471150 (or 1395471147 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The spelling of 87914681631 in words is "eighty-seven billion, nine hundred fourteen million, six hundred eighty-one thousand, six hundred thirty-one".