19886585144 has 16 divisors (see below), whose sum is σ = 39249839400. Its totient is φ = 9419961312.

The previous prime is 19886585141. The next prime is 19886585149. The reversal of 19886585144 is 44158568891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19886585141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65416247 + ... + 65416550.

Almost surely, 2^19886585144 is an apocalyptic number.

It is an amenable number.

19886585144 is a deficient number, since it is larger than the sum of its proper divisors (19363254256).

19886585144 is a wasteful number, since it uses less digits than its factorization.

19886585144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130832822 (or 130832818 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 59.

The spelling of 19886585144 in words is "nineteen billion, eight hundred eighty-six million, five hundred eighty-five thousand, one hundred forty-four".