12345123541 has 16 divisors (see below), whose sum is σ = 12698150400. Its totient is φ = 11996196480.

The previous prime is 12345123533. The next prime is 12345123551. The reversal of 12345123541 is 14532154321.

It is a cyclic number.

It is not a de Polignac number, because 12345123541 - 2³ = 12345123533 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 (12345123551) 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, 4047385 + ... + 4050433.

It is an arithmetic number, because the mean of its divisors is an integer number (793634400).

Almost surely, 2^12345123541 is an apocalyptic number.

It is an amenable number.

12345123541 is a deficient number, since it is larger than the sum of its proper divisors (353026859).

12345123541 is a wasteful number, since it uses less digits than its factorization.

12345123541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684.

The product of its digits is 14400, while the sum is 31.

Adding to 12345123541 its reverse (14532154321), we get a palindrome (26877277862).

The spelling of 12345123541 in words is "twelve billion, three hundred forty-five million, one hundred twenty-three thousand, five hundred forty-one".