16878813126 has 36 divisors (see below), whose sum is σ = 39274258788. Its totient is φ = 4821881568.

The previous prime is 16878813089. The next prime is 16878813157. The reversal of 16878813126 is 62131887861.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2223850 + ... + 2231426.

It is an arithmetic number, because the mean of its divisors is an integer number (1090951633).

Almost surely, 2^16878813126 is an apocalyptic number.

16878813126 is an abundant number, since it is smaller than the sum of its proper divisors (22395445662).

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

16878813126 is an frugal number, since it uses more digits than its factorization.

16878813126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15173 (or 7589 counting only the distinct ones).

The product of its digits is 774144, while the sum is 51.

The spelling of 16878813126 in words is "sixteen billion, eight hundred seventy-eight million, eight hundred thirteen thousand, one hundred twenty-six".