12990348845 has 4 divisors (see below), whose sum is σ = 15588418620. Its totient is φ = 10392279072.

The previous prime is 12990348821. The next prime is 12990348859. The reversal of 12990348845 is 54884309921.

12990348845 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: 54884309921 = 7 ⋅7840615703.

It can be written as a sum of positive squares in 2 ways, for example, as 7351690564 + 5638658281 = 85742^2 + 75091^2 .

It is a cyclic number.

It is not a de Polignac number, because 12990348845 - 2²⁶ = 12923239981 is a prime.

It is a super-2 number, since 2×12990348845² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 1299034880 + ... + 1299034889.

It is an arithmetic number, because the mean of its divisors is an integer number (3897104655).

Almost surely, 2^12990348845 is an apocalyptic number.

It is an amenable number.

12990348845 is a deficient number, since it is larger than the sum of its proper divisors (2598069775).

12990348845 is an equidigital number, since it uses as much as digits as its factorization.

12990348845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2598069774.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 12990348845 in words is "twelve billion, nine hundred ninety million, three hundred forty-eight thousand, eight hundred forty-five".