19563885340 has 24 divisors (see below), whose sum is σ = 41087757312. Its totient is φ = 7824868800.

The previous prime is 19563885323. The next prime is 19563885409. The reversal of 19563885340 is 4358836591.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235290 + ... + 307390.

It is an arithmetic number, because the mean of its divisors is an integer number (1711989888).

Almost surely, 2^19563885340 is an apocalyptic number.

19563885340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19563885340 is an abundant number, since it is smaller than the sum of its proper divisors (21523871972).

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

19563885340 is a wasteful number, since it uses less digits than its factorization.

19563885340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85677 (or 85675 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 19563885340 in words is "nineteen billion, five hundred sixty-three million, eight hundred eighty-five thousand, three hundred forty".