22543977623 has 4 divisors (see below), whose sum is σ = 22588797168. Its totient is φ = 22499158080.

The previous prime is 22543977517. The next prime is 22543977637. The reversal of 22543977623 is 32677934522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22543977623 - 2¹² = 22543973527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22543971623) 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, 22409018 + ... + 22410023.

It is an arithmetic number, because the mean of its divisors is an integer number (5647199292).

Almost surely, 2^22543977623 is an apocalyptic number.

22543977623 is a deficient number, since it is larger than the sum of its proper divisors (44819545).

22543977623 is an equidigital number, since it uses as much as digits as its factorization.

22543977623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44819544.

The product of its digits is 3810240, while the sum is 50.

The spelling of 22543977623 in words is "twenty-two billion, five hundred forty-three million, nine hundred seventy-seven thousand, six hundred twenty-three".