15115015423 has 4 divisors (see below), whose sum is σ = 15116321088. Its totient is φ = 15113709760.

The previous prime is 15115015379. The next prime is 15115015439. The reversal of 15115015423 is 32451051151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32451051151 = 397 ⋅81740683.

It is a cyclic number.

It is not a de Polignac number, because 15115015423 - 2³³ = 6525080831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15115015391 and 15115015400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15115015453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635311 + ... + 658672.

It is an arithmetic number, because the mean of its divisors is an integer number (3779080272).

Almost surely, 2^15115015423 is an apocalyptic number.

15115015423 is a deficient number, since it is larger than the sum of its proper divisors (1305665).

15115015423 is a wasteful number, since it uses less digits than its factorization.

15115015423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305664.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 15115015423 its reverse (32451051151), we get a palindrome (47566066574).

The spelling of 15115015423 in words is "fifteen billion, one hundred fifteen million, fifteen thousand, four hundred twenty-three".