86586976891 has 2 divisors, whose sum is σ = 86586976892. Its totient is φ = 86586976890.

The previous prime is 86586976807. The next prime is 86586976907. The reversal of 86586976891 is 19867968568.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86586976891 is a prime.

It is not a weakly prime, because it can be changed into another prime (86586976391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43293488445 + 43293488446.

It is an arithmetic number, because the mean of its divisors is an integer number (43293488446).

Almost surely, 2^86586976891 is an apocalyptic number.

86586976891 is a deficient number, since it is larger than the sum of its proper divisors (1).

86586976891 is an equidigital number, since it uses as much as digits as its factorization.

86586976891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 313528320, while the sum is 73.

The spelling of 86586976891 in words is "eighty-six billion, five hundred eighty-six million, nine hundred seventy-six thousand, eight hundred ninety-one".