86646601762499 has 2 divisors, whose sum is σ = 86646601762500. Its totient is φ = 86646601762498.

The previous prime is 86646601762393. The next prime is 86646601762537. The reversal of 86646601762499 is 99426710664668.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86646601762499 is a prime.

It is not a weakly prime, because it can be changed into another prime (86646601762099) 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, 43323300881249 + 43323300881250.

It is an arithmetic number, because the mean of its divisors is an integer number (43323300881250).

Almost surely, 2^{86646601762499} is an apocalyptic number.

86646601762499 is a deficient number, since it is larger than the sum of its proper divisors (1).

86646601762499 is an equidigital number, since it uses as much as digits as its factorization.

86646601762499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1128701952, while the sum is 74.

The spelling of 86646601762499 in words is "eighty-six trillion, six hundred forty-six billion, six hundred one million, seven hundred sixty-two thousand, four hundred ninety-nine".