165782290875 has 16 divisors (see below), whose sum is σ = 275861732640. Its totient is φ = 88417221600.

The previous prime is 165782290873. The next prime is 165782290897. The reversal of 165782290875 is 578092287561.

It is not a de Polignac number, because 165782290875 - 2¹ = 165782290873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165782290873) 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, 221042680 + ... + 221043429.

It is an arithmetic number, because the mean of its divisors is an integer number (17241358290).

Almost surely, 2^165782290875 is an apocalyptic number.

165782290875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165782290875 is a deficient number, since it is larger than the sum of its proper divisors (110079441765).

165782290875 is an equidigital number, since it uses as much as digits as its factorization.

165782290875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442086127 (or 442086117 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 60.

The spelling of 165782290875 in words is "one hundred sixty-five billion, seven hundred eighty-two million, two hundred ninety thousand, eight hundred seventy-five".