165120266564463 has 32 divisors (see below), whose sum is σ = 260251123571712. Its totient is φ = 91159390713600.

The previous prime is 165120266564459. The next prime is 165120266564521. The reversal of 165120266564463 is 364465662021561.

It is not a de Polignac number, because 165120266564463 - 2² = 165120266564459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165120266564413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 930869148 + ... + 931046513.

It is an arithmetic number, because the mean of its divisors is an integer number (8132847611616).

Almost surely, 2^{165120266564463} is an apocalyptic number.

165120266564463 is a deficient number, since it is larger than the sum of its proper divisors (95130857007249).

165120266564463 is a wasteful number, since it uses less digits than its factorization.

165120266564463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861915815.

The product of its (nonzero) digits is 37324800, while the sum is 57.

The spelling of 165120266564463 in words is "one hundred sixty-five trillion, one hundred twenty billion, two hundred sixty-six million, five hundred sixty-four thousand, four hundred sixty-three".