66623714355179 has 2 divisors, whose sum is σ = 66623714355180. Its totient is φ = 66623714355178.

The previous prime is 66623714355173. The next prime is 66623714355193. The reversal of 66623714355179 is 97155341732666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66623714355179 - 2²⁰ = 66623713306603 is a prime.

It is not a weakly prime, because it can be changed into another prime (66623714355173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33311857177589 + 33311857177590.

It is an arithmetic number, because the mean of its divisors is an integer number (33311857177590).

Almost surely, 2^{66623714355179} is an apocalyptic number.

66623714355179 is a deficient number, since it is larger than the sum of its proper divisors (1).

66623714355179 is an equidigital number, since it uses as much as digits as its factorization.

66623714355179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 171460800, while the sum is 65.

The spelling of 66623714355179 in words is "sixty-six trillion, six hundred twenty-three billion, seven hundred fourteen million, three hundred fifty-five thousand, one hundred seventy-nine".