13249961273 has 2 divisors, whose sum is σ = 13249961274. Its totient is φ = 13249961272.

The previous prime is 13249961269. The next prime is 13249961299. The reversal of 13249961273 is 37216994231.

It is a happy number.

13249961273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9722551609 + 3527409664 = 98603^2 + 59392^2 .

It is a cyclic number.

It is not a de Polignac number, because 13249961273 - 2² = 13249961269 is a prime.

It is a super-2 number, since 2×13249961273² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13249961213) 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 as a sum of consecutive naturals, namely, 6624980636 + 6624980637.

It is an arithmetic number, because the mean of its divisors is an integer number (6624980637).

Almost surely, 2^13249961273 is an apocalyptic number.

It is an amenable number.

13249961273 is a deficient number, since it is larger than the sum of its proper divisors (1).

13249961273 is an equidigital number, since it uses as much as digits as its factorization.

13249961273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 47.

The spelling of 13249961273 in words is "thirteen billion, two hundred forty-nine million, nine hundred sixty-one thousand, two hundred seventy-three".