22545382547 has 4 divisors (see below), whose sum is σ = 22545937680. Its totient is φ = 22544827416.

The previous prime is 22545382543. The next prime is 22545382579. The reversal of 22545382547 is 74528354522.

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 22545382547 - 2² = 22545382543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22545382543) 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, 211388 + ... + 299625.

It is an arithmetic number, because the mean of its divisors is an integer number (5636484420).

Almost surely, 2^22545382547 is an apocalyptic number.

22545382547 is a deficient number, since it is larger than the sum of its proper divisors (555133).

22545382547 is an equidigital number, since it uses as much as digits as its factorization.

22545382547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555132.

The product of its digits is 2688000, while the sum is 47.

The spelling of 22545382547 in words is "twenty-two billion, five hundred forty-five million, three hundred eighty-two thousand, five hundred forty-seven".