165428875340 has 24 divisors (see below), whose sum is σ = 351586191600. Its totient is φ = 65374301888.

The previous prime is 165428875307. The next prime is 165428875349. The reversal of 165428875340 is 43578824561.

It is not an unprimeable number, because it can be changed into a prime (165428875349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49826315 + ... + 49829634.

It is an arithmetic number, because the mean of its divisors is an integer number (14649424650).

Almost surely, 2^165428875340 is an apocalyptic number.

165428875340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165428875340 is an abundant number, since it is smaller than the sum of its proper divisors (186157316260).

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

165428875340 is a wasteful number, since it uses less digits than its factorization.

165428875340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99656041 (or 99656039 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 53.

The spelling of 165428875340 in words is "one hundred sixty-five billion, four hundred twenty-eight million, eight hundred seventy-five thousand, three hundred forty".