165065066600655 has 128 divisors (see below), whose sum is σ = 306414644659200. Its totient is φ = 75180022235136.

The previous prime is 165065066600597. The next prime is 165065066600669. The reversal of 165065066600655 is 556006660560561.

It is not a de Polignac number, because 165065066600655 - 2¹³ = 165065066592463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 165065066600595 and 165065066600604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 795356041 + ... + 795563549.

It is an arithmetic number, because the mean of its divisors is an integer number (2393864411400).

Almost surely, 2^{165065066600655} is an apocalyptic number.

165065066600655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165065066600655 is a deficient number, since it is larger than the sum of its proper divisors (141349578058545).

165065066600655 is a wasteful number, since it uses less digits than its factorization.

165065066600655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212585.

The product of its (nonzero) digits is 29160000, while the sum is 57.

The spelling of 165065066600655 in words is "one hundred sixty-five trillion, sixty-five billion, sixty-six million, six hundred thousand, six hundred fifty-five".