166164057013 has 2 divisors, whose sum is σ = 166164057014. Its totient is φ = 166164057012.

The previous prime is 166164056999. The next prime is 166164057047. The reversal of 166164057013 is 310750461661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143430353284 + 22733703729 = 378722^2 + 150777^2 .

It is a cyclic number.

It is not a de Polignac number, because 166164057013 - 2³³ = 157574122421 is a prime.

It is a super-2 number, since 2×166164057013² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166164058013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83082028506 + 83082028507.

It is an arithmetic number, because the mean of its divisors is an integer number (83082028507).

Almost surely, 2^166164057013 is an apocalyptic number.

It is an amenable number.

166164057013 is a deficient number, since it is larger than the sum of its proper divisors (1).

166164057013 is an equidigital number, since it uses as much as digits as its factorization.

166164057013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 166164057013 in words is "one hundred sixty-six billion, one hundred sixty-four million, fifty-seven thousand, thirteen".