15123114243 has 6 divisors (see below), whose sum is σ = 21844498364. Its totient is φ = 10082076156.

The previous prime is 15123114199. The next prime is 15123114311. The reversal of 15123114243 is 34241132151.

15123114243 is a `hidden beast` number, since 1 + 5 + 1 + 231 + 1 + 424 + 3 = 666.

It is not a de Polignac number, because 15123114243 - 2⁶ = 15123114179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15123114043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 840173005 + ... + 840173022.

Almost surely, 2^15123114243 is an apocalyptic number.

15123114243 is a deficient number, since it is larger than the sum of its proper divisors (6721384121).

15123114243 is a wasteful number, since it uses less digits than its factorization.

15123114243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680346033 (or 1680346030 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 15123114243 its reverse (34241132151), we get a palindrome (49364246394).

The spelling of 15123114243 in words is "fifteen billion, one hundred twenty-three million, one hundred fourteen thousand, two hundred forty-three".