15315280493 has 2 divisors, whose sum is σ = 15315280494. Its totient is φ = 15315280492.

The previous prime is 15315280471. The next prime is 15315280511. The reversal of 15315280493 is 39408251351.

15315280493 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., 15096299689 + 218980804 = 122867^2 + 14798^2 .

It is a cyclic number.

It is not a de Polignac number, because 15315280493 - 2²⁰ = 15314231917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15315280493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15315280403) 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, 7657640246 + 7657640247.

It is an arithmetic number, because the mean of its divisors is an integer number (7657640247).

Almost surely, 2^15315280493 is an apocalyptic number.

It is an amenable number.

15315280493 is a deficient number, since it is larger than the sum of its proper divisors (1).

15315280493 is an equidigital number, since it uses as much as digits as its factorization.

15315280493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 15315280493 in words is "fifteen billion, three hundred fifteen million, two hundred eighty thousand, four hundred ninety-three".