12913273981 has 8 divisors (see below), whose sum is σ = 13620841280. Its totient is φ = 12208498848.

The previous prime is 12913273979. The next prime is 12913273991. The reversal of 12913273981 is 18937231921.

12913273981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12913273981 - 2¹ = 12913273979 is a prime.

It is a super-2 number, since 2×12913273981² (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 (12913273991) 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 7 ways as a sum of consecutive naturals, for example, 688536 + ... + 707041.

It is an arithmetic number, because the mean of its divisors is an integer number (1702605160).

Almost surely, 2^12913273981 is an apocalyptic number.

It is an amenable number.

12913273981 is a deficient number, since it is larger than the sum of its proper divisors (707567299).

12913273981 is a wasteful number, since it uses less digits than its factorization.

12913273981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396083.

The product of its digits is 163296, while the sum is 46.

The spelling of 12913273981 in words is "twelve billion, nine hundred thirteen million, two hundred seventy-three thousand, nine hundred eighty-one".