18816969153115 has 48 divisors (see below), whose sum is σ = 26357324235840. Its totient is φ = 12858690324480.

The previous prime is 18816969153107. The next prime is 18816969153137. The reversal of 18816969153115 is 51135196961881.

It is not a de Polignac number, because 18816969153115 - 2³ = 18816969153107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 372492099 + ... + 372542611.

It is an arithmetic number, because the mean of its divisors is an integer number (549110921580).

Almost surely, 2^{18816969153115} is an apocalyptic number.

18816969153115 is a deficient number, since it is larger than the sum of its proper divisors (7540355082725).

18816969153115 is a wasteful number, since it uses less digits than its factorization.

18816969153115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55732 (or 55725 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 64.

The spelling of 18816969153115 in words is "eighteen trillion, eight hundred sixteen billion, nine hundred sixty-nine million, one hundred fifty-three thousand, one hundred fifteen".