22006644806660 has 24 divisors (see below), whose sum is σ = 46231776784536. Its totient is φ = 8799263124480.

The previous prime is 22006644806623. The next prime is 22006644806677. The reversal of 22006644806660 is 6660844660022.

It can be written as a sum of positive squares in 4 ways, for example, as 8616256139716 + 13390388666944 = 2935346^2 + 3659288^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22006644806599 and 22006644806608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212121731 + ... + 212225450.

It is an arithmetic number, because the mean of its divisors is an integer number (1926324032689).

Almost surely, 2^{22006644806660} is an apocalyptic number.

22006644806660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22006644806660 is an abundant number, since it is smaller than the sum of its proper divisors (24225131977876).

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

22006644806660 is a wasteful number, since it uses less digits than its factorization.

22006644806660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424349783 (or 424349781 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 50.

The spelling of 22006644806660 in words is "twenty-two trillion, six billion, six hundred forty-four million, eight hundred six thousand, six hundred sixty".