13349921288 has 24 divisors (see below), whose sum is σ = 27513527790. Its totient is φ = 6068145600.

The previous prime is 13349921287. The next prime is 13349921311. The reversal of 13349921288 is 88212994331.

It can be written as a sum of positive squares in only one way, i.e., 8903432164 + 4446489124 = 94358^2 + 66682^2 .

It is not an unprimeable number, because it can be changed into a prime (13349921287) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6894653 + ... + 6896588.

Almost surely, 2^13349921288 is an apocalyptic number.

It is an amenable number.

13349921288 is an abundant number, since it is smaller than the sum of its proper divisors (14163606502).

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

13349921288 is a wasteful number, since it uses less digits than its factorization.

13349921288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13791269 (or 13791254 counting only the distinct ones).

The product of its digits is 746496, while the sum is 50.

The spelling of 13349921288 in words is "thirteen billion, three hundred forty-nine million, nine hundred twenty-one thousand, two hundred eighty-eight".