13370721232 has 80 divisors (see below), whose sum is σ = 28992769344. Its totient is φ = 5920640000.

The previous prime is 13370721209. The next prime is 13370721263. The reversal of 13370721232 is 23212707331.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13370721194 and 13370721203.

It is a congruent number.

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, 9214107 + ... + 9215557.

Almost surely, 2^13370721232 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 13370721232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14496384672).

13370721232 is an abundant number, since it is smaller than the sum of its proper divisors (15622048112).

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

13370721232 is a wasteful number, since it uses less digits than its factorization.

13370721232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2788 (or 2782 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 31.

The spelling of 13370721232 in words is "thirteen billion, three hundred seventy million, seven hundred twenty-one thousand, two hundred thirty-two".