13337903781 has 6 divisors (see below), whose sum is σ = 19265861030. Its totient is φ = 8891935848.

The previous prime is 13337903771. The next prime is 13337903827. The reversal of 13337903781 is 18730973331.

It can be written as a sum of positive squares in only one way, i.e., 9398333025 + 3939570756 = 96945^2 + 62766^2 .

It is not a de Polignac number, because 13337903781 - 2⁷ = 13337903653 is a prime.

It is a super-2 number, since 2×13337903781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13337903731) 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, 740994646 + ... + 740994663.

Almost surely, 2^13337903781 is an apocalyptic number.

It is an amenable number.

13337903781 is a deficient number, since it is larger than the sum of its proper divisors (5927957249).

13337903781 is a wasteful number, since it uses less digits than its factorization.

13337903781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481989315 (or 1481989312 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The spelling of 13337903781 in words is "thirteen billion, three hundred thirty-seven million, nine hundred three thousand, seven hundred eighty-one".