13121409024 has 156 divisors (see below), whose sum is σ = 39308412416. Its totient is φ = 4373471232.

The previous prime is 13121409011. The next prime is 13121409043. The reversal of 13121409024 is 42090412131.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 988737 + ... + 1001919.

Almost surely, 2^13121409024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13121409024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19654206208).

13121409024 is an abundant number, since it is smaller than the sum of its proper divisors (26187003392).

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

13121409024 is an frugal number, since it uses more digits than its factorization.

13121409024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13222 (or 13188 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 13121409024 in words is "thirteen billion, one hundred twenty-one million, four hundred nine thousand, twenty-four".