12814686781 has 24 divisors (see below), whose sum is σ = 14757529920. Its totient is φ = 11090566656.

The previous prime is 12814686767. The next prime is 12814686793. The reversal of 12814686781 is 18768641821.

It is not a de Polignac number, because 12814686781 - 2¹³ = 12814678589 is a prime.

It is a super-2 number, since 2×12814686781² (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 (12814686701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 290896 + ... + 332038.

It is an arithmetic number, because the mean of its divisors is an integer number (614897080).

Almost surely, 2^12814686781 is an apocalyptic number.

It is an amenable number.

12814686781 is a deficient number, since it is larger than the sum of its proper divisors (1942843139).

12814686781 is a wasteful number, since it uses less digits than its factorization.

12814686781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41285 (or 41272 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 52.

The spelling of 12814686781 in words is "twelve billion, eight hundred fourteen million, six hundred eighty-six thousand, seven hundred eighty-one".