12123892235844 has 45 divisors (see below), whose sum is σ = 31694412992781. Its totient is φ = 4041276520320.

The previous prime is 12123892235827. The next prime is 12123892235863. The reversal of 12123892235844 is 44853229832121.

It is a happy number.

The square root of 12123892235844 is 3481938.

It is a perfect power (a square), and thus also a powerful number.

12123892235844 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 38 + 9 + 2 + 23 + 584 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 461940434244 + 11661951801600 = 679662^2 + 3414960^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 62578164 + ... + 62771604.

Almost surely, 2^{12123892235844} is an apocalyptic number.

12123892235844 is the 3481938-th square number.

It is an amenable number.

12123892235844 is an abundant number, since it is smaller than the sum of its proper divisors (19570520756937).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12123892235844 is an frugal number, since it uses more digits than its factorization.

12123892235844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386898 (or 193446 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 54.

The spelling of 12123892235844 in words is "twelve trillion, one hundred twenty-three billion, eight hundred ninety-two million, two hundred thirty-five thousand, eight hundred forty-four".