13204821312 has 56 divisors (see below), whose sum is σ = 38819734400. Its totient is φ = 4401606528.

The previous prime is 13204821307. The next prime is 13204821337. The reversal of 13204821312 is 21312840231.

13204821312 is a `hidden beast` number, since 1 + 320 + 4 + 8 + 21 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3819112 + ... + 3822567.

Almost surely, 2^13204821312 is an apocalyptic number.

13204821312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13204821312 is an abundant number, since it is smaller than the sum of its proper divisors (25614913088).

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

13204821312 is an equidigital number, since it uses as much as digits as its factorization.

13204821312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7641700 (or 7641684 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The spelling of 13204821312 in words is "thirteen billion, two hundred four million, eight hundred twenty-one thousand, three hundred twelve".