12138033426 has 16 divisors (see below), whose sum is σ = 24638397024. Its totient is φ = 3985622784.

The previous prime is 12138033419. The next prime is 12138033443. The reversal of 12138033426 is 62433083121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15096655 + ... + 15097458.

It is an arithmetic number, because the mean of its divisors is an integer number (1539899814).

Almost surely, 2^12138033426 is an apocalyptic number.

12138033426 is an abundant number, since it is smaller than the sum of its proper divisors (12500363598).

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

12138033426 is a wasteful number, since it uses less digits than its factorization.

12138033426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30194185.

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 12138033426 in words is "twelve billion, one hundred thirty-eight million, thirty-three thousand, four hundred twenty-six".