22004039978 has 8 divisors (see below), whose sum is σ = 33010423968. Its totient is φ = 11000565324.

The previous prime is 22004039957. The next prime is 22004040013. The reversal of 22004039978 is 87993040022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708326 + ... + 738737.

It is an arithmetic number, because the mean of its divisors is an integer number (4126302996).

Almost surely, 2^22004039978 is an apocalyptic number.

22004039978 is a deficient number, since it is larger than the sum of its proper divisors (11006383990).

22004039978 is a wasteful number, since it uses less digits than its factorization.

22004039978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454668.

The product of its (nonzero) digits is 217728, while the sum is 44.

Adding to 22004039978 its sum of digits (44), we get a palindrome (22004040022).

The spelling of 22004039978 in words is "twenty-two billion, four million, thirty-nine thousand, nine hundred seventy-eight".