22421445425666 has 32 divisors (see below), whose sum is σ = 39755539611648. Its totient is φ = 9280729397520.

The previous prime is 22421445425653. The next prime is 22421445425681. The reversal of 22421445425666 is 66652454412422.

It is a happy number.

It is a super-2 number, since 2×22421445425666² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 15 ways as a sum of consecutive naturals, for example, 51135890 + ... + 51572493.

It is an arithmetic number, because the mean of its divisors is an integer number (1242360612864).

Almost surely, 2^{22421445425666} is an apocalyptic number.

22421445425666 is a deficient number, since it is larger than the sum of its proper divisors (17334094185982).

22421445425666 is a wasteful number, since it uses less digits than its factorization.

22421445425666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102708926.

The product of its digits is 22118400, while the sum is 53.

The spelling of 22421445425666 in words is "twenty-two trillion, four hundred twenty-one billion, four hundred forty-five million, four hundred twenty-five thousand, six hundred sixty-six".