13120012949 has 2 divisors, whose sum is σ = 13120012950. Its totient is φ = 13120012948.

The previous prime is 13120012937. The next prime is 13120012967. The reversal of 13120012949 is 94921002131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13114372324 + 5640625 = 114518^2 + 2375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13120012949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13120012049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560006474 + 6560006475.

It is an arithmetic number, because the mean of its divisors is an integer number (6560006475).

Almost surely, 2^13120012949 is an apocalyptic number.

It is an amenable number.

13120012949 is a deficient number, since it is larger than the sum of its proper divisors (1).

13120012949 is an equidigital number, since it uses as much as digits as its factorization.

13120012949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 13120012949 in words is "thirteen billion, one hundred twenty million, twelve thousand, nine hundred forty-nine".