165154555275 has 24 divisors (see below), whose sum is σ = 273201238704. Its totient is φ = 88035427200.

The previous prime is 165154555271. The next prime is 165154555303. The reversal of 165154555275 is 572555451561.

It is not a de Polignac number, because 165154555275 - 2² = 165154555271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165154555271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 445816 + ... + 727365.

It is an arithmetic number, because the mean of its divisors is an integer number (11383384946).

Almost surely, 2^165154555275 is an apocalyptic number.

165154555275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165154555275 is a deficient number, since it is larger than the sum of its proper divisors (108046683429).

165154555275 is a wasteful number, since it uses less digits than its factorization.

165154555275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175071 (or 1175066 counting only the distinct ones).

The product of its digits is 5250000, while the sum is 51.

The spelling of 165154555275 in words is "one hundred sixty-five billion, one hundred fifty-four million, five hundred fifty-five thousand, two hundred seventy-five".