12513774381 has 16 divisors (see below), whose sum is σ = 17414517120. Its totient is φ = 7977942720.

The previous prime is 12513774359. The next prime is 12513774397. The reversal of 12513774381 is 18347731521.

12513774381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12513774381 - 2¹⁵ = 12513741613 is a prime.

It is a super-2 number, since 2×12513774381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12513774331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316755 + ... + 354063.

It is an arithmetic number, because the mean of its divisors is an integer number (1088407320).

Almost surely, 2^12513774381 is an apocalyptic number.

It is an amenable number.

12513774381 is a deficient number, since it is larger than the sum of its proper divisors (4900742739).

12513774381 is a wasteful number, since it uses less digits than its factorization.

12513774381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42196.

The product of its digits is 141120, while the sum is 42.

The spelling of 12513774381 in words is "twelve billion, five hundred thirteen million, seven hundred seventy-four thousand, three hundred eighty-one".