166632615411623 has 2 divisors, whose sum is σ = 166632615411624. Its totient is φ = 166632615411622.

The previous prime is 166632615411599. The next prime is 166632615411677. The reversal of 166632615411623 is 326114516236661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166632615411623 - 2²⁴ = 166632598634407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166632615411323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83316307705811 + 83316307705812.

It is an arithmetic number, because the mean of its divisors is an integer number (83316307705812).

Almost surely, 2^{166632615411623} is an apocalyptic number.

166632615411623 is a deficient number, since it is larger than the sum of its proper divisors (1).

166632615411623 is an equidigital number, since it uses as much as digits as its factorization.

166632615411623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 53.

The spelling of 166632615411623 in words is "one hundred sixty-six trillion, six hundred thirty-two billion, six hundred fifteen million, four hundred eleven thousand, six hundred twenty-three".