22779517456 has 20 divisors (see below), whose sum is σ = 44146470204. Its totient is φ = 11386880000.

The previous prime is 22779517451. The next prime is 22779517459. The reversal of 22779517456 is 65471597722.

It can be written as a sum of positive squares in 2 ways, for example, as 12727449856 + 10052067600 = 112816^2 + 100260^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22779517397 and 22779517406.

It is not an unprimeable number, because it can be changed into a prime (22779517451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113905 + ... + 241936.

Almost surely, 2^22779517456 is an apocalyptic number.

It is an amenable number.

22779517456 is a deficient number, since it is larger than the sum of its proper divisors (21366952748).

22779517456 is a wasteful number, since it uses less digits than its factorization.

22779517456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359850 (or 359844 counting only the distinct ones).

The product of its digits is 7408800, while the sum is 55.

The spelling of 22779517456 in words is "twenty-two billion, seven hundred seventy-nine million, five hundred seventeen thousand, four hundred fifty-six".