22420641786 has 16 divisors (see below), whose sum is σ = 44843649024. Its totient is φ = 7473153024.

The previous prime is 22420641731. The next prime is 22420641809. The reversal of 22420641786 is 68714602422.

It is a happy number.

It is a super-2 number, since 2×22420641786² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39546 + ... + 215418.

It is an arithmetic number, because the mean of its divisors is an integer number (2802728064).

Almost surely, 2^22420641786 is an apocalyptic number.

22420641786 is an abundant number, since it is smaller than the sum of its proper divisors (22423007238).

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

22420641786 is a wasteful number, since it uses less digits than its factorization.

22420641786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197125.

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 22420641786 in words is "twenty-two billion, four hundred twenty million, six hundred forty-one thousand, seven hundred eighty-six".