86976539491 has 2 divisors, whose sum is σ = 86976539492. Its totient is φ = 86976539490.

The previous prime is 86976539473. The next prime is 86976539579. The reversal of 86976539491 is 19493567968.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86976539491 is a prime.

It is not a weakly prime, because it can be changed into another prime (86976539401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43488269745 + 43488269746.

It is an arithmetic number, because the mean of its divisors is an integer number (43488269746).

Almost surely, 2^86976539491 is an apocalyptic number.

86976539491 is a deficient number, since it is larger than the sum of its proper divisors (1).

86976539491 is an equidigital number, since it uses as much as digits as its factorization.

86976539491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88179840, while the sum is 67.

The spelling of 86976539491 in words is "eighty-six billion, nine hundred seventy-six million, five hundred thirty-nine thousand, four hundred ninety-one".