15261281323 has 2 divisors, whose sum is σ = 15261281324. Its totient is φ = 15261281322.

The previous prime is 15261281303. The next prime is 15261281363. The reversal of 15261281323 is 32318216251.

15261281323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15261281323 is a prime.

It is not a weakly prime, because it can be changed into another prime (15261281303) 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, 7630640661 + 7630640662.

It is an arithmetic number, because the mean of its divisors is an integer number (7630640662).

Almost surely, 2^15261281323 is an apocalyptic number.

15261281323 is a deficient number, since it is larger than the sum of its proper divisors (1).

15261281323 is an equidigital number, since it uses as much as digits as its factorization.

15261281323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

Adding to 15261281323 its reverse (32318216251), we get a palindrome (47579497574).

The spelling of 15261281323 in words is "fifteen billion, two hundred sixty-one million, two hundred eighty-one thousand, three hundred twenty-three".