22919812065 has 48 divisors (see below), whose sum is σ = 39980304000. Its totient is φ = 12146340096.

The previous prime is 22919812061. The next prime is 22919812109. The reversal of 22919812065 is 56021891922.

It is a happy number.

It is not a de Polignac number, because 22919812065 - 2² = 22919812061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 22919812065.

It is not an unprimeable number, because it can be changed into a prime (22919812061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10109062 + ... + 10111328.

It is an arithmetic number, because the mean of its divisors is an integer number (832923000).

Almost surely, 2^22919812065 is an apocalyptic number.

It is an amenable number.

22919812065 is a deficient number, since it is larger than the sum of its proper divisors (17060491935).

22919812065 is a wasteful number, since it uses less digits than its factorization.

22919812065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606 (or 3603 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 22919812065 in words is "twenty-two billion, nine hundred nineteen million, eight hundred twelve thousand, sixty-five".