633660423613081 has 2 divisors, whose sum is σ = 633660423613082. Its totient is φ = 633660423613080.

The previous prime is 633660423613043. The next prime is 633660423613171. The reversal of 633660423613081 is 180316324066336.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 508630366537225 + 125030057075856 = 22552835^2 + 11181684^2 .

It is a cyclic number.

It is not a de Polignac number, because 633660423613081 - 2¹⁹ = 633660423088793 is a prime.

It is a super-2 number, since 2×633660423613081² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (633660423613031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316830211806540 + 316830211806541.

It is an arithmetic number, because the mean of its divisors is an integer number (316830211806541).

Almost surely, 2^{633660423613081} is an apocalyptic number.

It is an amenable number.

633660423613081 is a deficient number, since it is larger than the sum of its proper divisors (1).

633660423613081 is an equidigital number, since it uses as much as digits as its factorization.

633660423613081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6718464, while the sum is 52.

The spelling of 633660423613081 in words is "six hundred thirty-three trillion, six hundred sixty billion, four hundred twenty-three million, six hundred thirteen thousand, eighty-one".