12994036826 has 4 divisors (see below), whose sum is σ = 19491055242. Its totient is φ = 6497018412.

The previous prime is 12994036763. The next prime is 12994036897. The reversal of 12994036826 is 62863049921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62863049921 = 7 ⋅8980435703.

It can be written as a sum of positive squares in only one way, i.e., 11740806025 + 1253230801 = 108355^2 + 35401^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3248509205 + ... + 3248509208.

Almost surely, 2^12994036826 is an apocalyptic number.

12994036826 is a deficient number, since it is larger than the sum of its proper divisors (6497018416).

12994036826 is an equidigital number, since it uses as much as digits as its factorization.

12994036826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6497018415.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 12994036826 in words is "twelve billion, nine hundred ninety-four million, thirty-six thousand, eight hundred twenty-six".