16838999345025 has 144 divisors (see below), whose sum is σ = 35436901893120. Its totient is φ = 7535577139200.

The previous prime is 16838999344991. The next prime is 16838999345053. The reversal of 16838999345025 is 52054399983861.

It is a happy number.

16838999345025 is a `hidden beast` number, since 1 + 6 + 8 + 3 + 89 + 9 + 9 + 34 + 502 + 5 = 666.

It is not a de Polignac number, because 16838999345025 - 2¹⁹ = 16838998820737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 427811296 + ... + 427850654.

It is an arithmetic number, because the mean of its divisors is an integer number (246089596480).

Almost surely, 2^{16838999345025} is an apocalyptic number.

16838999345025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16838999345025 is an abundant number, since it is smaller than the sum of its proper divisors (18597902548095).

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

16838999345025 is a wasteful number, since it uses less digits than its factorization.

16838999345025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52696 (or 52688 counting only the distinct ones).

The product of its (nonzero) digits is 503884800, while the sum is 72.

The spelling of 16838999345025 in words is "sixteen trillion, eight hundred thirty-eight billion, nine hundred ninety-nine million, three hundred forty-five thousand, twenty-five".