165177025213 has 2 divisors, whose sum is σ = 165177025214. Its totient is φ = 165177025212.

The previous prime is 165177025201. The next prime is 165177025241. The reversal of 165177025213 is 312520771561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110737869529 + 54439155684 = 332773^2 + 233322^2 .

It is a cyclic number.

It is not a de Polignac number, because 165177025213 - 2¹³ = 165177017021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165177020213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82588512606 + 82588512607.

It is an arithmetic number, because the mean of its divisors is an integer number (82588512607).

Almost surely, 2^165177025213 is an apocalyptic number.

It is an amenable number.

165177025213 is a deficient number, since it is larger than the sum of its proper divisors (1).

165177025213 is an equidigital number, since it uses as much as digits as its factorization.

165177025213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88200, while the sum is 40.

Adding to 165177025213 its reverse (312520771561), we get a palindrome (477697796774).

The spelling of 165177025213 in words is "one hundred sixty-five billion, one hundred seventy-seven million, twenty-five thousand, two hundred thirteen".