22606666440 has 32 divisors (see below), whose sum is σ = 67819999680. Its totient is φ = 6028444352.

The previous prime is 22606666421. The next prime is 22606666457. The reversal of 22606666440 is 4466660622.

It is a super-2 number, since 2×22606666440² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22606666392 and 22606666401.

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, 94194324 + ... + 94194563.

It is an arithmetic number, because the mean of its divisors is an integer number (2119374990).

Almost surely, 2^22606666440 is an apocalyptic number.

22606666440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22606666440 is an abundant number, since it is smaller than the sum of its proper divisors (45213333240).

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

22606666440 is a wasteful number, since it uses less digits than its factorization.

22606666440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188388901 (or 188388897 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 22606666440 in words is "twenty-two billion, six hundred six million, six hundred sixty-six thousand, four hundred forty".