18123264125 has 16 divisors (see below), whose sum is σ = 22635395328. Its totient is φ = 14487354000.

The previous prime is 18123264091. The next prime is 18123264127. The reversal of 18123264125 is 52146232181.

It is not a de Polignac number, because 18123264125 - 2¹⁰ = 18123263101 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18123264127) 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, 107240 + ... + 218510.

It is an arithmetic number, because the mean of its divisors is an integer number (1414712208).

Almost surely, 2^18123264125 is an apocalyptic number.

It is an amenable number.

18123264125 is a deficient number, since it is larger than the sum of its proper divisors (4512131203).

18123264125 is a wasteful number, since it uses less digits than its factorization.

18123264125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112589 (or 112579 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The spelling of 18123264125 in words is "eighteen billion, one hundred twenty-three million, two hundred sixty-four thousand, one hundred twenty-five".