165565560010651 has 16 divisors (see below), whose sum is σ = 171208885469184. Its totient is φ = 160015595392224.

The previous prime is 165565560010553. The next prime is 165565560010679. The reversal of 165565560010651 is 156010065565561.

It is a cyclic number.

It is not a de Polignac number, because 165565560010651 - 2⁹ = 165565560010139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165565560010051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530729220 + ... + 531041086.

It is an arithmetic number, because the mean of its divisors is an integer number (10700555341824).

Almost surely, 2^{165565560010651} is an apocalyptic number.

165565560010651 is a deficient number, since it is larger than the sum of its proper divisors (5643325458533).

165565560010651 is a wasteful number, since it uses less digits than its factorization.

165565560010651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461490.

The product of its (nonzero) digits is 4050000, while the sum is 52.

The spelling of 165565560010651 in words is "one hundred sixty-five trillion, five hundred sixty-five billion, five hundred sixty million, ten thousand, six hundred fifty-one".