12745415149 has 2 divisors, whose sum is σ = 12745415150. Its totient is φ = 12745415148.

The previous prime is 12745415147. The next prime is 12745415167. The reversal of 12745415149 is 94151454721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6753881124 + 5991534025 = 82182^2 + 77405^2 .

It is a cyclic number.

It is not a de Polignac number, because 12745415149 - 2¹ = 12745415147 is a prime.

Together with 12745415147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12745415147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6372707574 + 6372707575.

It is an arithmetic number, because the mean of its divisors is an integer number (6372707575).

Almost surely, 2^12745415149 is an apocalyptic number.

It is an amenable number.

12745415149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12745415149 is an equidigital number, since it uses as much as digits as its factorization.

12745415149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 43.

The spelling of 12745415149 in words is "twelve billion, seven hundred forty-five million, four hundred fifteen thousand, one hundred forty-nine".