22207745646 has 16 divisors (see below), whose sum is σ = 49350546000. Its totient is φ = 7402581864.

The previous prime is 22207745639. The next prime is 22207745647. The reversal of 22207745646 is 64654770222.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22207745647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205627221 + ... + 205627328.

It is an arithmetic number, because the mean of its divisors is an integer number (3084409125).

Almost surely, 2^22207745646 is an apocalyptic number.

22207745646 is an abundant number, since it is smaller than the sum of its proper divisors (27142800354).

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

22207745646 is a wasteful number, since it uses less digits than its factorization.

22207745646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411254560 (or 411254554 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 45.

The spelling of 22207745646 in words is "twenty-two billion, two hundred seven million, seven hundred forty-five thousand, six hundred forty-six".