13655203565 has 16 divisors (see below), whose sum is σ = 16497775488. Its totient is φ = 10849899456.

The previous prime is 13655203553. The next prime is 13655203567. The reversal of 13655203565 is 56530255631.

It is a cyclic number.

It is not a de Polignac number, because 13655203565 - 2⁶ = 13655203501 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 (13655203567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1448447 + ... + 1457843.

It is an arithmetic number, because the mean of its divisors is an integer number (1031110968).

Almost surely, 2^13655203565 is an apocalyptic number.

It is an amenable number.

13655203565 is a deficient number, since it is larger than the sum of its proper divisors (2842571923).

13655203565 is a wasteful number, since it uses less digits than its factorization.

13655203565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11348.

The product of its (nonzero) digits is 405000, while the sum is 41.

The spelling of 13655203565 in words is "thirteen billion, six hundred fifty-five million, two hundred three thousand, five hundred sixty-five".