22420556656 has 20 divisors (see below), whose sum is σ = 43443372472. Its totient is φ = 11209363776.

The previous prime is 22420556629. The next prime is 22420556657. The reversal of 22420556656 is 65665502422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22420556657) 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 3 ways as a sum of consecutive naturals, for example, 173230 + ... + 273586.

Almost surely, 2^22420556656 is an apocalyptic number.

It is an amenable number.

22420556656 is a deficient number, since it is larger than the sum of its proper divisors (21022815816).

22420556656 is a wasteful number, since it uses less digits than its factorization.

22420556656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114328 (or 114322 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 22420556656 in words is "twenty-two billion, four hundred twenty million, five hundred fifty-six thousand, six hundred fifty-six".