13655121804 has 48 divisors (see below), whose sum is σ = 36941399040. Its totient is φ = 4353806160.

The previous prime is 13655121793. The next prime is 13655121811. The reversal of 13655121804 is 40812155631.

13655121804 is a `hidden beast` number, since 1 + 3 + 6 + 551 + 21 + 80 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 15 ways as a sum of consecutive naturals, for example, 2746132 + ... + 2751099.

It is an arithmetic number, because the mean of its divisors is an integer number (769612480).

Almost surely, 2^13655121804 is an apocalyptic number.

It is an amenable number.

13655121804 is an abundant number, since it is smaller than the sum of its proper divisors (23286277236).

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

13655121804 is a wasteful number, since it uses less digits than its factorization.

13655121804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5497267 (or 5497259 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 13655121804 in words is "thirteen billion, six hundred fifty-five million, one hundred twenty-one thousand, eight hundred four".