15131052449 has 2 divisors, whose sum is σ = 15131052450. Its totient is φ = 15131052448.

The previous prime is 15131052437. The next prime is 15131052467. The reversal of 15131052449 is 94425013151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15093842449 + 37210000 = 122857^2 + 6100^2 .

It is a cyclic number.

It is not a de Polignac number, because 15131052449 - 2⁸ = 15131052193 is a prime.

It is not a weakly prime, because it can be changed into another prime (15131052049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7565526224 + 7565526225.

It is an arithmetic number, because the mean of its divisors is an integer number (7565526225).

Almost surely, 2^15131052449 is an apocalyptic number.

It is an amenable number.

15131052449 is a deficient number, since it is larger than the sum of its proper divisors (1).

15131052449 is an equidigital number, since it uses as much as digits as its factorization.

15131052449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 15131052449 in words is "fifteen billion, one hundred thirty-one million, fifty-two thousand, four hundred forty-nine".