13563535655 has 16 divisors (see below), whose sum is σ = 16638096384. Its totient is φ = 10610025120.

The previous prime is 13563535649. The next prime is 13563535693. The reversal of 13563535655 is 55653536531.

It is not a de Polignac number, because 13563535655 - 2⁴ = 13563535639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229934 + ... + 282836.

It is an arithmetic number, because the mean of its divisors is an integer number (1039881024).

Almost surely, 2^13563535655 is an apocalyptic number.

13563535655 is a deficient number, since it is larger than the sum of its proper divisors (3074560729).

13563535655 is a wasteful number, since it uses less digits than its factorization.

13563535655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54046.

The product of its digits is 3037500, while the sum is 47.

The spelling of 13563535655 in words is "thirteen billion, five hundred sixty-three million, five hundred thirty-five thousand, six hundred fifty-five".