19888825215 has 64 divisors (see below), whose sum is σ = 39138923520. Its totient is φ = 8416880640.

The previous prime is 19888825189. The next prime is 19888825237. The reversal of 19888825215 is 51252888891.

It is a happy number.

It is not a de Polignac number, because 19888825215 - 2¹⁰ = 19888824191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17556 + ... + 200214.

It is an arithmetic number, because the mean of its divisors is an integer number (611545680).

Almost surely, 2^19888825215 is an apocalyptic number.

19888825215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19888825215 is a deficient number, since it is larger than the sum of its proper divisors (19250098305).

19888825215 is a wasteful number, since it uses less digits than its factorization.

19888825215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182752.

The product of its digits is 3686400, while the sum is 57.

The spelling of 19888825215 in words is "nineteen billion, eight hundred eighty-eight million, eight hundred twenty-five thousand, two hundred fifteen".