22406640266 has 4 divisors (see below), whose sum is σ = 33609960402. Its totient is φ = 11203320132.

The previous prime is 22406640239. The next prime is 22406640299. The reversal of 22406640266 is 66204660422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16085595241 + 6321045025 = 126829^2 + 79505^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5601660065 + ... + 5601660068.

Almost surely, 2^22406640266 is an apocalyptic number.

22406640266 is a deficient number, since it is larger than the sum of its proper divisors (11203320136).

22406640266 is a wasteful number, since it uses less digits than its factorization.

22406640266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11203320135.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 22406640266 in words is "twenty-two billion, four hundred six million, six hundred forty thousand, two hundred sixty-six".