165491909022 has 32 divisors (see below), whose sum is σ = 361087735680. Its totient is φ = 50147052320.

The previous prime is 165491908991. The next prime is 165491909029. The reversal of 165491909022 is 220909194561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165491909029) 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, 2994028 + ... + 3048800.

It is an arithmetic number, because the mean of its divisors is an integer number (11283991740).

Almost surely, 2^165491909022 is an apocalyptic number.

165491909022 is an abundant number, since it is smaller than the sum of its proper divisors (195595826658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165491909022 is a wasteful number, since it uses less digits than its factorization.

165491909022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100568.

The product of its (nonzero) digits is 349920, while the sum is 48.

The spelling of 165491909022 in words is "one hundred sixty-five billion, four hundred ninety-one million, nine hundred nine thousand, twenty-two".