22678921356 has 192 divisors, whose sum is σ = 66472412160. Its totient is φ = 5858749440.

The previous prime is 22678921337. The next prime is 22678921373. The reversal of 22678921356 is 65312987622.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22678921299 and 22678921308.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20449330 + ... + 20450438.

It is an arithmetic number, because the mean of its divisors is an integer number (346210480).

Almost surely, 2^22678921356 is an apocalyptic number.

22678921356 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22678921356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33236206080).

22678921356 is an abundant number, since it is smaller than the sum of its proper divisors (43793490804).

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

22678921356 is a wasteful number, since it uses less digits than its factorization.

22678921356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504 (or 1502 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 51.

The spelling of 22678921356 in words is "twenty-two billion, six hundred seventy-eight million, nine hundred twenty-one thousand, three hundred fifty-six".