165281212398 has 8 divisors (see below), whose sum is σ = 330562424808. Its totient is φ = 55093737464.

The previous prime is 165281212391. The next prime is 165281212399. The reversal of 165281212398 is 893212182561.

It is a sphenic number, since it is the product of 3 distinct primes.

165281212398 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165281212391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13773434361 + ... + 13773434372.

It is an arithmetic number, because the mean of its divisors is an integer number (41320303101).

Almost surely, 2^165281212398 is an apocalyptic number.

165281212398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

165281212398 is a wasteful number, since it uses less digits than its factorization.

165281212398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27546868738.

The product of its digits is 414720, while the sum is 48.

The spelling of 165281212398 in words is "one hundred sixty-five billion, two hundred eighty-one million, two hundred twelve thousand, three hundred ninety-eight".