22145662543 has 4 divisors (see below), whose sum is σ = 22155060600. Its totient is φ = 22136264488.

The previous prime is 22145662537. The next prime is 22145662619. The reversal of 22145662543 is 34526654122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34526654122 = 2 ⋅17263327061.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22145662543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22145662496 and 22145662505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22145668543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4695493 + ... + 4700206.

It is an arithmetic number, because the mean of its divisors is an integer number (5538765150).

Almost surely, 2^22145662543 is an apocalyptic number.

22145662543 is a deficient number, since it is larger than the sum of its proper divisors (9398057).

22145662543 is an equidigital number, since it uses as much as digits as its factorization.

22145662543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9398056.

The product of its digits is 345600, while the sum is 40.

The spelling of 22145662543 in words is "twenty-two billion, one hundred forty-five million, six hundred sixty-two thousand, five hundred forty-three".