13774137381 has 12 divisors (see below), whose sum is σ = 20943133120. Its totient is φ = 8699455080.

The previous prime is 13774137359. The next prime is 13774137431. The reversal of 13774137381 is 18373147731.

13774137381 is a `hidden beast` number, since 137 + 7 + 4 + 137 + 381 = 666.

It is not a de Polignac number, because 13774137381 - 2⁷ = 13774137253 is a prime.

It is a super-2 number, since 2×13774137381² (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 (13774137281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40275085 + ... + 40275426.

Almost surely, 2^13774137381 is an apocalyptic number.

It is an amenable number.

13774137381 is a deficient number, since it is larger than the sum of its proper divisors (7168995739).

13774137381 is a wasteful number, since it uses less digits than its factorization.

13774137381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80550536 (or 80550533 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The spelling of 13774137381 in words is "thirteen billion, seven hundred seventy-four million, one hundred thirty-seven thousand, three hundred eighty-one".