165556064063241 has 6 divisors (see below), whose sum is σ = 239136536980250. Its totient is φ = 110370709375488.

The previous prime is 165556064063227. The next prime is 165556064063267. The reversal of 165556064063241 is 142360460655561.

165556064063241 is a `hidden beast` number, since 1 + 6 + 5 + 5 + 5 + 606 + 4 + 0 + 6 + 3 + 24 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 139152693690000 + 26403370373241 = 11796300^2 + 5138421^2 .

It is not a de Polignac number, because 165556064063241 - 2⁵ = 165556064063209 is a prime.

It is a super-2 number, since 2×165556064063241² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165556064063141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9197559114616 + ... + 9197559114633.

Almost surely, 2^{165556064063241} is an apocalyptic number.

It is an amenable number.

165556064063241 is a deficient number, since it is larger than the sum of its proper divisors (73580472917009).

165556064063241 is a wasteful number, since it uses less digits than its factorization.

165556064063241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18395118229255 (or 18395118229252 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 54.

The spelling of 165556064063241 in words is "one hundred sixty-five trillion, five hundred fifty-six billion, sixty-four million, sixty-three thousand, two hundred forty-one".