165151203585 has 32 divisors (see below), whose sum is σ = 269312491008. Its totient is φ = 86391502080.

The previous prime is 165151203583. The next prime is 165151203587. The reversal of 165151203585 is 585302151561.

It is an interprime number because it is at equal distance from previous prime (165151203583) and next prime (165151203587).

It is not a de Polignac number, because 165151203585 - 2¹ = 165151203583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165151203583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2626615 + ... + 2688755.

It is an arithmetic number, because the mean of its divisors is an integer number (8416015344).

Almost surely, 2^165151203585 is an apocalyptic number.

165151203585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165151203585 is a deficient number, since it is larger than the sum of its proper divisors (104161287423).

165151203585 is a wasteful number, since it uses less digits than its factorization.

165151203585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65545.

The product of its (nonzero) digits is 180000, while the sum is 42.

The spelling of 165151203585 in words is "one hundred sixty-five billion, one hundred fifty-one million, two hundred three thousand, five hundred eighty-five".