15122491499 has 2 divisors, whose sum is σ = 15122491500. Its totient is φ = 15122491498.

The previous prime is 15122491477. The next prime is 15122491511. The reversal of 15122491499 is 99419422151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15122491499 - 2³² = 10827524203 is a prime.

It is not a weakly prime, because it can be changed into another prime (15122491469) 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, 7561245749 + 7561245750.

It is an arithmetic number, because the mean of its divisors is an integer number (7561245750).

Almost surely, 2^15122491499 is an apocalyptic number.

15122491499 is a deficient number, since it is larger than the sum of its proper divisors (1).

15122491499 is an equidigital number, since it uses as much as digits as its factorization.

15122491499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 47.

The spelling of 15122491499 in words is "fifteen billion, one hundred twenty-two million, four hundred ninety-one thousand, four hundred ninety-nine".