165162799897 has 2 divisors, whose sum is σ = 165162799898. Its totient is φ = 165162799896.

The previous prime is 165162799847. The next prime is 165162799903. The reversal of 165162799897 is 798997261561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154717142281 + 10445657616 = 393341^2 + 102204^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165162799897 is a prime.

It is not a weakly prime, because it can be changed into another prime (165162799817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82581399948 + 82581399949.

It is an arithmetic number, because the mean of its divisors is an integer number (82581399949).

Almost surely, 2^165162799897 is an apocalyptic number.

It is an amenable number.

165162799897 is a deficient number, since it is larger than the sum of its proper divisors (1).

165162799897 is an equidigital number, since it uses as much as digits as its factorization.

165162799897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102876480, while the sum is 70.

The spelling of 165162799897 in words is "one hundred sixty-five billion, one hundred sixty-two million, seven hundred ninety-nine thousand, eight hundred ninety-seven".