22378786656 has 48 divisors (see below), whose sum is σ = 58792656384. Its totient is φ = 7453457024.

The previous prime is 22378786643. The next prime is 22378786667. The reversal of 22378786656 is 65668787322.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 22378786656.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 22105 + ... + 212711.

It is an arithmetic number, because the mean of its divisors is an integer number (1224847008).

Almost surely, 2^22378786656 is an apocalyptic number.

It is an amenable number.

22378786656 is an abundant number, since it is smaller than the sum of its proper divisors (36413869728).

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

22378786656 is a wasteful number, since it uses less digits than its factorization.

22378786656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191843 (or 191835 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 60.

The spelling of 22378786656 in words is "twenty-two billion, three hundred seventy-eight million, seven hundred eighty-six thousand, six hundred fifty-six".