12907294381 has 4 divisors (see below), whose sum is σ = 12907612764. Its totient is φ = 12906976000.

The previous prime is 12907294369. The next prime is 12907294403. The reversal of 12907294381 is 18349270921.

It is a happy number.

12907294381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18349270921 = 112241 ⋅163481.

It can be written as a sum of positive squares in 2 ways, for example, as 7515329481 + 5391964900 = 86691^2 + 73430^2 .

It is a cyclic number.

It is not a de Polignac number, because 12907294381 - 2⁵ = 12907294349 is a prime.

It is a super-2 number, since 2×12907294381² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12907694381) 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 3 ways as a sum of consecutive naturals, for example, 87670 + ... + 183031.

It is an arithmetic number, because the mean of its divisors is an integer number (3226903191).

Almost surely, 2^12907294381 is an apocalyptic number.

It is an amenable number.

12907294381 is a deficient number, since it is larger than the sum of its proper divisors (318383).

12907294381 is an equidigital number, since it uses as much as digits as its factorization.

12907294381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318382.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 12907294381 in words is "twelve billion, nine hundred seven million, two hundred ninety-four thousand, three hundred eighty-one".