12541554123 has 16 divisors (see below), whose sum is σ = 19113561600. Its totient is φ = 7165619136.

The previous prime is 12541554089. The next prime is 12541554131. The reversal of 12541554123 is 32145514521.

It is not a de Polignac number, because 12541554123 - 2⁶ = 12541554059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12541554163) 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, 132903 + ... + 206751.

It is an arithmetic number, because the mean of its divisors is an integer number (1194597600).

Almost surely, 2^12541554123 is an apocalyptic number.

12541554123 is a deficient number, since it is larger than the sum of its proper divisors (6572007477).

12541554123 is an equidigital number, since it uses as much as digits as its factorization.

12541554123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81946.

The product of its digits is 24000, while the sum is 33.

The spelling of 12541554123 in words is "twelve billion, five hundred forty-one million, five hundred fifty-four thousand, one hundred twenty-three".