86956031999957 has 2 divisors, whose sum is σ = 86956031999958. Its totient is φ = 86956031999956.

The previous prime is 86956031999929. The next prime is 86956031999987. The reversal of 86956031999957 is 75999913065968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86063638148401 + 892393851556 = 9277049^2 + 944666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86956031999957 is a prime.

It is a super-2 number, since 2×86956031999957² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86956031999987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43478015999978 + 43478015999979.

It is an arithmetic number, because the mean of its divisors is an integer number (43478015999979).

Almost surely, 2^{86956031999957} is an apocalyptic number.

It is an amenable number.

86956031999957 is a deficient number, since it is larger than the sum of its proper divisors (1).

86956031999957 is an equidigital number, since it uses as much as digits as its factorization.

86956031999957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8928208800, while the sum is 86.

The spelling of 86956031999957 in words is "eighty-six trillion, nine hundred fifty-six billion, thirty-one million, nine hundred ninety-nine thousand, nine hundred fifty-seven".