13909477563 has 12 divisors (see below), whose sum is σ = 20432001720. Its totient is φ = 9115815456.

The previous prime is 13909477541. The next prime is 13909477607. The reversal of 13909477563 is 36577490931.

It is a happy number.

13909477563 is a `hidden beast` number, since 1 + 3 + 9 + 0 + 9 + 4 + 77 + 563 = 666.

It is not a de Polignac number, because 13909477563 - 2⁵ = 13909477531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13909477663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13096906 + ... + 13097967.

It is an arithmetic number, because the mean of its divisors is an integer number (1702666810).

Almost surely, 2^13909477563 is an apocalyptic number.

13909477563 is a deficient number, since it is larger than the sum of its proper divisors (6522524157).

13909477563 is a wasteful number, since it uses less digits than its factorization.

13909477563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26194938 (or 26194935 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 54.

The spelling of 13909477563 in words is "thirteen billion, nine hundred nine million, four hundred seventy-seven thousand, five hundred sixty-three".