22773980646 has 24 divisors (see below), whose sum is σ = 49360349064. Its totient is φ = 7588753920.

The previous prime is 22773980641. The next prime is 22773980701. The reversal of 22773980646 is 64608937722.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22773980592 and 22773980601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22773980641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159451 + ... + 266406.

It is an arithmetic number, because the mean of its divisors is an integer number (2056681211).

Almost surely, 2^22773980646 is an apocalyptic number.

22773980646 is an abundant number, since it is smaller than the sum of its proper divisors (26586368418).

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

22773980646 is a wasteful number, since it uses less digits than its factorization.

22773980646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428836 (or 428833 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 22773980646 in words is "twenty-two billion, seven hundred seventy-three million, nine hundred eighty thousand, six hundred forty-six".