13563516920 has 32 divisors (see below), whose sum is σ = 31570257600. Its totient is φ = 5238323328.

The previous prime is 13563516919. The next prime is 13563516931. The reversal of 13563516920 is 2961536531.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5845184 + ... + 5847503.

It is an arithmetic number, because the mean of its divisors is an integer number (986570550).

Almost surely, 2^13563516920 is an apocalyptic number.

13563516920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13563516920 is an abundant number, since it is smaller than the sum of its proper divisors (18006740680).

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

13563516920 is a wasteful number, since it uses less digits than its factorization.

13563516920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11692727 (or 11692723 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 41.

The spelling of 13563516920 in words is "thirteen billion, five hundred sixty-three million, five hundred sixteen thousand, nine hundred twenty".