22305045640 has 64 divisors (see below), whose sum is σ = 50471942400. Its totient is φ = 8871399168.

The previous prime is 22305045617. The next prime is 22305045641. The reversal of 22305045640 is 4654050322.

It is a super-2 number, since 2×22305045640² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22305045641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5564517 + ... + 5568523.

It is an arithmetic number, because the mean of its divisors is an integer number (788624100).

Almost surely, 2^22305045640 is an apocalyptic number.

22305045640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22305045640 is an abundant number, since it is smaller than the sum of its proper divisors (28166896760).

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

22305045640 is a wasteful number, since it uses less digits than its factorization.

22305045640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4774 (or 4770 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 22305045640 its reverse (4654050322), we get a palindrome (26959095962).

The spelling of 22305045640 in words is "twenty-two billion, three hundred five million, forty-five thousand, six hundred forty".