22469816778 has 16 divisors (see below), whose sum is σ = 44945754336. Its totient is φ = 7488918800.

The previous prime is 22469816749. The next prime is 22469816791. The reversal of 22469816778 is 87761896422.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206601 + ... + 296012.

It is an arithmetic number, because the mean of its divisors is an integer number (2809109646).

Almost surely, 2^22469816778 is an apocalyptic number.

22469816778 is an abundant number, since it is smaller than the sum of its proper divisors (22475937558).

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

22469816778 is a wasteful number, since it uses less digits than its factorization.

22469816778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510069.

The product of its digits is 16257024, while the sum is 60.

The spelling of 22469816778 in words is "twenty-two billion, four hundred sixty-nine million, eight hundred sixteen thousand, seven hundred seventy-eight".