15532312249 has 2 divisors, whose sum is σ = 15532312250. Its totient is φ = 15532312248.

The previous prime is 15532312219. The next prime is 15532312253. The reversal of 15532312249 is 94221323551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11724558400 + 3807753849 = 108280^2 + 61707^2 .

It is a cyclic number.

It is not a de Polignac number, because 15532312249 - 2²¹ = 15530215097 is a prime.

It is not a weakly prime, because it can be changed into another prime (15532312219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7766156124 + 7766156125.

It is an arithmetic number, because the mean of its divisors is an integer number (7766156125).

Almost surely, 2^15532312249 is an apocalyptic number.

It is an amenable number.

15532312249 is a deficient number, since it is larger than the sum of its proper divisors (1).

15532312249 is an equidigital number, since it uses as much as digits as its factorization.

15532312249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 37.

The spelling of 15532312249 in words is "fifteen billion, five hundred thirty-two million, three hundred twelve thousand, two hundred forty-nine".