165246604441641 has 12 divisors (see below), whose sum is σ = 238689665518980. Its totient is φ = 110164344913440.

The previous prime is 165246604441637. The next prime is 165246604441649. The reversal of 165246604441641 is 146144406642561.

165246604441641 is a `hidden beast` number, since 1 + 6 + 5 + 24 + 6 + 604 + 4 + 4 + 1 + 6 + 4 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 48159380572416 + 117087223869225 = 6939696^2 + 10820685^2 .

It is not a de Polignac number, because 165246604441641 - 2² = 165246604441637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165246604441649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19792215 + ... + 26874243.

It is an arithmetic number, because the mean of its divisors is an integer number (19890805459915).

Almost surely, 2^{165246604441641} is an apocalyptic number.

It is an amenable number.

165246604441641 is a deficient number, since it is larger than the sum of its proper divisors (73443061077339).

165246604441641 is a wasteful number, since it uses less digits than its factorization.

165246604441641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9674616 (or 9674613 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 54.

The spelling of 165246604441641 in words is "one hundred sixty-five trillion, two hundred forty-six billion, six hundred four million, four hundred forty-one thousand, six hundred forty-one".