165437332117 has 2 divisors, whose sum is σ = 165437332118. Its totient is φ = 165437332116.

The previous prime is 165437332111. The next prime is 165437332153. The reversal of 165437332117 is 711233734561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164710975716 + 726356401 = 405846^2 + 26951^2 .

It is a cyclic number.

It is not a de Polignac number, because 165437332117 - 2²³ = 165428943509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165437332111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82718666058 + 82718666059.

It is an arithmetic number, because the mean of its divisors is an integer number (82718666059).

Almost surely, 2^165437332117 is an apocalyptic number.

It is an amenable number.

165437332117 is a deficient number, since it is larger than the sum of its proper divisors (1).

165437332117 is an equidigital number, since it uses as much as digits as its factorization.

165437332117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 43.

The spelling of 165437332117 in words is "one hundred sixty-five billion, four hundred thirty-seven million, three hundred thirty-two thousand, one hundred seventeen".