86632219979 has 2 divisors, whose sum is σ = 86632219980. Its totient is φ = 86632219978.

The previous prime is 86632219969. The next prime is 86632219991. The reversal of 86632219979 is 97991223668.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86632219979 is a prime.

It is not a weakly prime, because it can be changed into another prime (86632219939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43316109989 + 43316109990.

It is an arithmetic number, because the mean of its divisors is an integer number (43316109990).

Almost surely, 2^86632219979 is an apocalyptic number.

86632219979 is a deficient number, since it is larger than the sum of its proper divisors (1).

86632219979 is an equidigital number, since it uses as much as digits as its factorization.

86632219979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17635968, while the sum is 62.

The spelling of 86632219979 in words is "eighty-six billion, six hundred thirty-two million, two hundred nineteen thousand, nine hundred seventy-nine".