21606114266 has 32 divisors (see below), whose sum is σ = 37445079168. Its totient is φ = 9240816640.

The previous prime is 21606114259. The next prime is 21606114287. The reversal of 21606114266 is 66241160612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2607506 + ... + 2615778.

It is an arithmetic number, because the mean of its divisors is an integer number (1170158724).

Almost surely, 2^21606114266 is an apocalyptic number.

21606114266 is a deficient number, since it is larger than the sum of its proper divisors (15838964902).

21606114266 is a wasteful number, since it uses less digits than its factorization.

21606114266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15286.

The product of its (nonzero) digits is 20736, while the sum is 35.

Adding to 21606114266 its reverse (66241160612), we get a palindrome (87847274878).

The spelling of 21606114266 in words is "twenty-one billion, six hundred six million, one hundred fourteen thousand, two hundred sixty-six".