22455566678 has 16 divisors (see below), whose sum is σ = 35166864096. Its totient is φ = 10733807040.

The previous prime is 22455566671. The next prime is 22455566687. The reversal of 22455566678 is 87666555422.

It is a happy number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22455566671) by changing a digit.

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, 45551 + ... + 216762.

It is an arithmetic number, because the mean of its divisors is an integer number (2197929006).

Almost surely, 2^22455566678 is an apocalyptic number.

22455566678 is a deficient number, since it is larger than the sum of its proper divisors (12711297418).

22455566678 is a wasteful number, since it uses less digits than its factorization.

22455566678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264199.

The product of its digits is 24192000, while the sum is 56.

The spelling of 22455566678 in words is "twenty-two billion, four hundred fifty-five million, five hundred sixty-six thousand, six hundred seventy-eight".