166523026434113 has 16 divisors (see below), whose sum is σ = 167618218878720. Its totient is φ = 165431867356800.

The previous prime is 166523026434101. The next prime is 166523026434181. The reversal of 166523026434113 is 311434620325661.

It is a happy number.

166523026434113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 166523026434113 - 2⁴ = 166523026434097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166523026494113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180231983 + ... + 181153563.

It is an arithmetic number, because the mean of its divisors is an integer number (10476138679920).

Almost surely, 2^{166523026434113} is an apocalyptic number.

It is an amenable number.

166523026434113 is a deficient number, since it is larger than the sum of its proper divisors (1095192444607).

166523026434113 is a wasteful number, since it uses less digits than its factorization.

166523026434113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923768.

The product of its (nonzero) digits is 1866240, while the sum is 47.

Adding to 166523026434113 its reverse (311434620325661), we get a palindrome (477957646759774).

The spelling of 166523026434113 in words is "one hundred sixty-six trillion, five hundred twenty-three billion, twenty-six million, four hundred thirty-four thousand, one hundred thirteen".