15534522491 has 2 divisors, whose sum is σ = 15534522492. Its totient is φ = 15534522490.

The previous prime is 15534522467. The next prime is 15534522503. The reversal of 15534522491 is 19422543551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15534522491 - 2⁶ = 15534522427 is a prime.

It is not a weakly prime, because it can be changed into another prime (15534522691) 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, 7767261245 + 7767261246.

It is an arithmetic number, because the mean of its divisors is an integer number (7767261246).

Almost surely, 2^15534522491 is an apocalyptic number.

15534522491 is a deficient number, since it is larger than the sum of its proper divisors (1).

15534522491 is an equidigital number, since it uses as much as digits as its factorization.

15534522491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216000, while the sum is 41.

The spelling of 15534522491 in words is "fifteen billion, five hundred thirty-four million, five hundred twenty-two thousand, four hundred ninety-one".