165280063998 has 32 divisors (see below), whose sum is σ = 378048623616. Its totient is φ = 47189672928.

The previous prime is 165280063981. The next prime is 165280064023. The reversal of 165280063998 is 899360082561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1322961 + ... + 1442492.

It is an arithmetic number, because the mean of its divisors is an integer number (11814019488).

Almost surely, 2^165280063998 is an apocalyptic number.

165280063998 is an abundant number, since it is smaller than the sum of its proper divisors (212768559618).

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

165280063998 is a wasteful number, since it uses less digits than its factorization.

165280063998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766888.

The product of its (nonzero) digits is 5598720, while the sum is 57.

The spelling of 165280063998 in words is "one hundred sixty-five billion, two hundred eighty million, sixty-three thousand, nine hundred ninety-eight".