13653235220 has 12 divisors (see below), whose sum is σ = 28671794004. Its totient is φ = 5461294080.

The previous prime is 13653235201. The next prime is 13653235231. The reversal of 13653235220 is 2253235631.

It can be written as a sum of positive squares in 2 ways, for example, as 10095828484 + 3557406736 = 100478^2 + 59644^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341330861 + ... + 341330900.

It is an arithmetic number, because the mean of its divisors is an integer number (2389316167).

Almost surely, 2^13653235220 is an apocalyptic number.

13653235220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13653235220 is an abundant number, since it is smaller than the sum of its proper divisors (15018558784).

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

13653235220 is a wasteful number, since it uses less digits than its factorization.

13653235220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682661770 (or 682661768 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 32.

The spelling of 13653235220 in words is "thirteen billion, six hundred fifty-three million, two hundred thirty-five thousand, two hundred twenty".