15243417897 has 16 divisors (see below), whose sum is σ = 21525305472. Its totient is φ = 9562192640.

The previous prime is 15243417887. The next prime is 15243417899. The reversal of 15243417897 is 79871434251.

It is not a de Polignac number, because 15243417897 - 2¹⁰ = 15243416873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (15243417899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191668 + ... + 259274.

It is an arithmetic number, because the mean of its divisors is an integer number (1345331592).

Almost surely, 2^15243417897 is an apocalyptic number.

15243417897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

15243417897 is a deficient number, since it is larger than the sum of its proper divisors (6281887575).

15243417897 is a wasteful number, since it uses less digits than its factorization.

15243417897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72048.

The product of its digits is 1693440, while the sum is 51.

The spelling of 15243417897 in words is "fifteen billion, two hundred forty-three million, four hundred seventeen thousand, eight hundred ninety-seven".