86787063531 has 12 divisors (see below), whose sum is σ = 143267533552. Its totient is φ = 49592607696.

The previous prime is 86787063521. The next prime is 86787063533. The reversal of 86787063531 is 13536078768.

It is not a de Polignac number, because 86787063531 - 2⁹ = 86787063019 is a prime.

It is a super-2 number, since 2×86787063531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86787063533) 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, 688786156 + ... + 688786281.

Almost surely, 2^86787063531 is an apocalyptic number.

86787063531 is a deficient number, since it is larger than the sum of its proper divisors (56480470021).

86787063531 is a wasteful number, since it uses less digits than its factorization.

86787063531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377572450 (or 1377572447 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 86787063531 in words is "eighty-six billion, seven hundred eighty-seven million, sixty-three thousand, five hundred thirty-one".