13381751368 has 32 divisors (see below), whose sum is σ = 25247509560. Its totient is φ = 6649136640.

The previous prime is 13381751347. The next prime is 13381751377. The reversal of 13381751368 is 86315718331.

It can be written as a sum of positive squares in 4 ways, for example, as 7266198564 + 6115552804 = 85242^2 + 78202^2 .

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, 2883546 + ... + 2888182.

Almost surely, 2^13381751368 is an apocalyptic number.

It is an amenable number.

13381751368 is a deficient number, since it is larger than the sum of its proper divisors (11865758192).

13381751368 is a wasteful number, since it uses less digits than its factorization.

13381751368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6817 (or 6813 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The spelling of 13381751368 in words is "thirteen billion, three hundred eighty-one million, seven hundred fifty-one thousand, three hundred sixty-eight".