663832532617979 has 2 divisors, whose sum is σ = 663832532617980. Its totient is φ = 663832532617978.

The previous prime is 663832532617937. The next prime is 663832532617993. The reversal of 663832532617979 is 979716235238366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 663832532617979 - 2²⁴ = 663832515840763 is a prime.

It is not a weakly prime, because it can be changed into another prime (663832532610979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331916266308989 + 331916266308990.

It is an arithmetic number, because the mean of its divisors is an integer number (331916266308990).

Almost surely, 2^{663832532617979} is an apocalyptic number.

663832532617979 is a deficient number, since it is larger than the sum of its proper divisors (1).

663832532617979 is an equidigital number, since it uses as much as digits as its factorization.

663832532617979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3703553280, while the sum is 77.

The spelling of 663832532617979 in words is "six hundred sixty-three trillion, eight hundred thirty-two billion, five hundred thirty-two million, six hundred seventeen thousand, nine hundred seventy-nine".