12694904981 has 8 divisors (see below), whose sum is σ = 13880539200. Its totient is φ = 11514529440.

The previous prime is 12694904969. The next prime is 12694904983. The reversal of 12694904981 is 18940949621.

12694904981 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 12694904981 - 2¹⁰ = 12694903957 is a prime.

It is a super-2 number, since 2×12694904981² (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 (12694904983) 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, 1309616 + ... + 1319273.

It is an arithmetic number, because the mean of its divisors is an integer number (1735067400).

Almost surely, 2^12694904981 is an apocalyptic number.

12694904981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12694904981 is a deficient number, since it is larger than the sum of its proper divisors (1185634219).

12694904981 is a wasteful number, since it uses less digits than its factorization.

12694904981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629339.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The spelling of 12694904981 in words is "twelve billion, six hundred ninety-four million, nine hundred four thousand, nine hundred eighty-one".