12345023015 has 16 divisors (see below), whose sum is σ = 15975102528. Its totient is φ = 9104019456.

The previous prime is 12345022999. The next prime is 12345023017. The reversal of 12345023015 is 51032054321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12345023015 - 2⁴ = 12345022999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345023017) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 79514 + ... + 176103.

It is an arithmetic number, because the mean of its divisors is an integer number (998443908).

Almost surely, 2^12345023015 is an apocalyptic number.

12345023015 is a deficient number, since it is larger than the sum of its proper divisors (3630079513).

12345023015 is a wasteful number, since it uses less digits than its factorization.

12345023015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256378.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 12345023015 its reverse (51032054321), we get a palindrome (63377077336).

The spelling of 12345023015 in words is "twelve billion, three hundred forty-five million, twenty-three thousand, fifteen".