13563873455 has 16 divisors (see below), whose sum is σ = 18329131008. Its totient is φ = 9546420000.

The previous prime is 13563873437. The next prime is 13563873457. The reversal of 13563873455 is 55437836531.

It is not a de Polignac number, because 13563873455 - 2¹⁴ = 13563857071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13563873457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3975971 + ... + 3979380.

It is an arithmetic number, because the mean of its divisors is an integer number (1145570688).

Almost surely, 2^13563873455 is an apocalyptic number.

13563873455 is a deficient number, since it is larger than the sum of its proper divisors (4765257553).

13563873455 is a wasteful number, since it uses less digits than its factorization.

13563873455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7955398.

The product of its digits is 4536000, while the sum is 50.

The spelling of 13563873455 in words is "thirteen billion, five hundred sixty-three million, eight hundred seventy-three thousand, four hundred fifty-five".