15243454415 has 24 divisors (see below), whose sum is σ = 21222204192. Its totient is φ = 10296538560.

The previous prime is 15243454403. The next prime is 15243454427. The reversal of 15243454415 is 51445434251.

It is an interprime number because it is at equal distance from previous prime (15243454403) and next prime (15243454427).

It is not a de Polignac number, because 15243454415 - 2¹⁰ = 15243453391 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 108605 + ... + 205625.

It is an arithmetic number, because the mean of its divisors is an integer number (884258508).

Almost surely, 2^15243454415 is an apocalyptic number.

15243454415 is a deficient number, since it is larger than the sum of its proper divisors (5978749777).

15243454415 is an frugal number, since it uses more digits than its factorization.

15243454415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97167 (or 97100 counting only the distinct ones).

The product of its digits is 192000, while the sum is 38.

Adding to 15243454415 its reverse (51445434251), we get a palindrome (66688888666).

The spelling of 15243454415 in words is "fifteen billion, two hundred forty-three million, four hundred fifty-four thousand, four hundred fifteen".