15545045317 has 2 divisors, whose sum is σ = 15545045318. Its totient is φ = 15545045316.

The previous prime is 15545045261. The next prime is 15545045323. The reversal of 15545045317 is 71354054551.

It is a happy number.

15545045317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9355919076 + 6189126241 = 96726^2 + 78671^2 .

It is a cyclic number.

It is not a de Polignac number, because 15545045317 - 2²⁷ = 15410827589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15545045317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15545025317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7772522658 + 7772522659.

It is an arithmetic number, because the mean of its divisors is an integer number (7772522659).

Almost surely, 2^15545045317 is an apocalyptic number.

It is an amenable number.

15545045317 is a deficient number, since it is larger than the sum of its proper divisors (1).

15545045317 is an equidigital number, since it uses as much as digits as its factorization.

15545045317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210000, while the sum is 40.

Adding to 15545045317 its reverse (71354054551), we get a palindrome (86899099868).

The spelling of 15545045317 in words is "fifteen billion, five hundred forty-five million, forty-five thousand, three hundred seventeen".