22778889408 has 336 divisors, whose sum is σ = 75465651456. Its totient is φ = 6501242880.

The previous prime is 22778889379. The next prime is 22778889409. The reversal of 22778889408 is 80498887722.

22778889408 is a `hidden beast` number, since 2 + 2 + 77 + 88 + 89 + 408 = 666.

It is not an unprimeable number, because it can be changed into a prime (22778889409) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9762610 + ... + 9764942.

Almost surely, 2^22778889408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22778889408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37732825728).

22778889408 is an abundant number, since it is smaller than the sum of its proper divisors (52686762048).

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

22778889408 is a wasteful number, since it uses less digits than its factorization.

22778889408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452 (or 2439 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 63.

The spelling of 22778889408 in words is "twenty-two billion, seven hundred seventy-eight million, eight hundred eighty-nine thousand, four hundred eight".