86491296623 has 2 divisors, whose sum is σ = 86491296624. Its totient is φ = 86491296622.

The previous prime is 86491296599. The next prime is 86491296653. The reversal of 86491296623 is 32669219468.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86491296623 - 2¹⁸ = 86491034479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86491296653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43245648311 + 43245648312.

It is an arithmetic number, because the mean of its divisors is an integer number (43245648312).

Almost surely, 2^86491296623 is an apocalyptic number.

86491296623 is a deficient number, since it is larger than the sum of its proper divisors (1).

86491296623 is an equidigital number, since it uses as much as digits as its factorization.

86491296623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6718464, while the sum is 56.

The spelling of 86491296623 in words is "eighty-six billion, four hundred ninety-one million, two hundred ninety-six thousand, six hundred twenty-three".