22138640834 has 16 divisors (see below), whose sum is σ = 33275370240. Its totient is φ = 11046874800.

The previous prime is 22138640833. The next prime is 22138640851. The reversal of 22138640834 is 43804683122.

It is a junction number, because it is equal to n+sod(n) for n = 22138640791 and 22138640800.

It is not an unprimeable number, because it can be changed into a prime (22138640833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2240597 + ... + 2250455.

It is an arithmetic number, because the mean of its divisors is an integer number (2079710640).

Almost surely, 2^22138640834 is an apocalyptic number.

22138640834 is a deficient number, since it is larger than the sum of its proper divisors (11136729406).

22138640834 is a wasteful number, since it uses less digits than its factorization.

22138640834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12025.

The product of its (nonzero) digits is 221184, while the sum is 41.

The spelling of 22138640834 in words is "twenty-two billion, one hundred thirty-eight million, six hundred forty thousand, eight hundred thirty-four".