12123635344 has 20 divisors (see below), whose sum is σ = 24035813296. Its totient is φ = 5920844832.

The previous prime is 12123635297. The next prime is 12123635351. The reversal of 12123635344 is 44353632121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8810094 + ... + 8811469.

Almost surely, 2^12123635344 is an apocalyptic number.

It is an amenable number.

12123635344 is a deficient number, since it is larger than the sum of its proper divisors (11912177952).

12123635344 is a wasteful number, since it uses less digits than its factorization.

12123635344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17621614 (or 17621608 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The spelling of 12123635344 in words is "twelve billion, one hundred twenty-three million, six hundred thirty-five thousand, three hundred forty-four".