13621874112 has 672 divisors, whose sum is σ = 51759429120. Its totient is φ = 3436646400.

The previous prime is 13621874111. The next prime is 13621874143. The reversal of 13621874112 is 21147812631.

13621874112 is a `hidden beast` number, since 1 + 3 + 62 + 187 + 411 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13621874111) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 60008143 + ... + 60008369.

It is an arithmetic number, because the mean of its divisors is an integer number (77022960).

Almost surely, 2^13621874112 is an apocalyptic number.

13621874112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13621874112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25879714560).

13621874112 is an abundant number, since it is smaller than the sum of its proper divisors (38137555008).

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

13621874112 is a wasteful number, since it uses less digits than its factorization.

13621874112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 291 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The spelling of 13621874112 in words is "thirteen billion, six hundred twenty-one million, eight hundred seventy-four thousand, one hundred twelve".