166364626564413 has 40 divisors (see below), whose sum is σ = 263270856965688. Its totient is φ = 104333270178816.

The previous prime is 166364626564397. The next prime is 166364626564429. The reversal of 166364626564413 is 314465626463661.

It is a happy number.

166364626564413 is a `hidden beast` number, since 1 + 6 + 6 + 3 + 6 + 4 + 6 + 26 + 564 + 41 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (166364626564397) and next prime (166364626564429).

It can be written as a sum of positive squares in 4 ways, for example, as 121083328341369 + 45281298223044 = 11003787^2 + 6729138^2 .

It is not a de Polignac number, because 166364626564413 - 2⁴ = 166364626564397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166364626564483) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 27565906 + ... + 33054627.

Almost surely, 2^{166364626564413} is an apocalyptic number.

It is an amenable number.

166364626564413 is a deficient number, since it is larger than the sum of its proper divisors (96906230401275).

166364626564413 is a wasteful number, since it uses less digits than its factorization.

166364626564413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60622555 (or 60622546 counting only the distinct ones).

The product of its digits is 268738560, while the sum is 63.

The spelling of 166364626564413 in words is "one hundred sixty-six trillion, three hundred sixty-four billion, six hundred twenty-six million, five hundred sixty-four thousand, four hundred thirteen".