13553643684 has 48 divisors (see below), whose sum is σ = 36252317696. Its totient is φ = 3860762400.

The previous prime is 13553643617. The next prime is 13553643739. The reversal of 13553643684 is 48634635531.

It is a super-2 number, since 2×13553643684² (a number of 21 digits) contains 22 as substring.

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, 215932 + ... + 271539.

Almost surely, 2^13553643684 is an apocalyptic number.

13553643684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13553643684 is an abundant number, since it is smaller than the sum of its proper divisors (22698674012).

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

13553643684 is a wasteful number, since it uses less digits than its factorization.

13553643684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487816 (or 487814 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 48.

The spelling of 13553643684 in words is "thirteen billion, five hundred fifty-three million, six hundred forty-three thousand, six hundred eighty-four".