86956031999987 has 2 divisors, whose sum is σ = 86956031999988. Its totient is φ = 86956031999986.

The previous prime is 86956031999957. The next prime is 86956032000037. The reversal of 86956031999987 is 78999913065968.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86956031999987 - 2²⁸ = 86955763564531 is a prime.

It is a super-2 number, since 2×86956031999987² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86956031999957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43478015999993 + 43478015999994.

It is an arithmetic number, because the mean of its divisors is an integer number (43478015999994).

Almost surely, 2^{86956031999987} is an apocalyptic number.

86956031999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

86956031999987 is an equidigital number, since it uses as much as digits as its factorization.

86956031999987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14285134080, while the sum is 89.

The spelling of 86956031999987 in words is "eighty-six trillion, nine hundred fifty-six billion, thirty-one million, nine hundred ninety-nine thousand, nine hundred eighty-seven".