22666236556655 has 4 divisors (see below), whose sum is σ = 27199483867992. Its totient is φ = 18132989245320.

The previous prime is 22666236556633. The next prime is 22666236556751. The reversal of 22666236556655 is 55665563266622.

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

It is not a de Polignac number, because 22666236556655 - 2⁸ = 22666236556399 is a prime.

It is a super-2 number, since 2×22666236556655² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22666236556591 and 22666236556600.

It is a congruent 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, 2266623655661 + ... + 2266623655670.

It is an arithmetic number, because the mean of its divisors is an integer number (6799870966998).

Almost surely, 2^{22666236556655} is an apocalyptic number.

22666236556655 is a deficient number, since it is larger than the sum of its proper divisors (4533247311337).

22666236556655 is an equidigital number, since it uses as much as digits as its factorization.

22666236556655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533247311336.

The product of its digits is 699840000, while the sum is 65.

The spelling of 22666236556655 in words is "twenty-two trillion, six hundred sixty-six billion, two hundred thirty-six million, five hundred fifty-six thousand, six hundred fifty-five".