22343243234440 has 32 divisors (see below), whose sum is σ = 50480896043160. Its totient is φ = 8900213068800.

The previous prime is 22343243234387. The next prime is 22343243234449. The reversal of 22343243234440 is 4443234234322.

It can be written as a sum of positive squares in 4 ways, for example, as 20651771314084 + 1691471920356 = 4544422^2 + 1300566^2 .

It is a super-2 number, since 2×22343243234440² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 22343243234393 and 22343243234402.

It is not an unprimeable number, because it can be changed into a prime (22343243234449) 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, 1158872271 + ... + 1158891550.

Almost surely, 2^{22343243234440} is an apocalyptic number.

22343243234440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22343243234440 is an abundant number, since it is smaller than the sum of its proper divisors (28137652808720).

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

22343243234440 is a wasteful number, since it uses less digits than its factorization.

22343243234440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317764073 (or 2317764069 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 40.

Adding to 22343243234440 its reverse (4443234234322), we get a palindrome (26786477468762).

The spelling of 22343243234440 in words is "twenty-two trillion, three hundred forty-three billion, two hundred forty-three million, two hundred thirty-four thousand, four hundred forty".