166316225623 has 2 divisors, whose sum is σ = 166316225624. Its totient is φ = 166316225622.

The previous prime is 166316225617. The next prime is 166316225687. The reversal of 166316225623 is 326522613661.

166316225623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166316225623 - 2⁵ = 166316225591 is a prime.

It is a super-2 number, since 2×166316225623² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166316225623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166316225323) 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, 83158112811 + 83158112812.

It is an arithmetic number, because the mean of its divisors is an integer number (83158112812).

Almost surely, 2^166316225623 is an apocalyptic number.

166316225623 is a deficient number, since it is larger than the sum of its proper divisors (1).

166316225623 is an equidigital number, since it uses as much as digits as its factorization.

166316225623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 43.

The spelling of 166316225623 in words is "one hundred sixty-six billion, three hundred sixteen million, two hundred twenty-five thousand, six hundred twenty-three".