12975812381 has 8 divisors (see below), whose sum is σ = 14835874944. Its totient is φ = 11117343600.

The previous prime is 12975812371. The next prime is 12975812417. The reversal of 12975812381 is 18321857921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12975812381 is a prime.

It is a super-2 number, since 2×12975812381² (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 (12975812371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380945 + ... + 413606.

It is an arithmetic number, because the mean of its divisors is an integer number (1854484368).

Almost surely, 2^12975812381 is an apocalyptic number.

It is an amenable number.

12975812381 is a deficient number, since it is larger than the sum of its proper divisors (1860062563).

12975812381 is an equidigital number, since it uses as much as digits as its factorization.

12975812381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796891.

The product of its digits is 241920, while the sum is 47.

The spelling of 12975812381 in words is "twelve billion, nine hundred seventy-five million, eight hundred twelve thousand, three hundred eighty-one".