22543120349 has 4 divisors (see below), whose sum is σ = 22543680636. Its totient is φ = 22542560064.

The previous prime is 22543120339. The next prime is 22543120409. The reversal of 22543120349 is 94302134522.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18175893124 + 4367227225 = 134818^2 + 66085^2 .

It is a cyclic number.

It is not a de Polignac number, because 22543120349 - 2²⁸ = 22274684893 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 (22543120339) 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, 214694 + ... + 301959.

It is an arithmetic number, because the mean of its divisors is an integer number (5635920159).

Almost surely, 2^22543120349 is an apocalyptic number.

It is an amenable number.

22543120349 is a deficient number, since it is larger than the sum of its proper divisors (560287).

22543120349 is an equidigital number, since it uses as much as digits as its factorization.

22543120349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560286.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 22543120349 in words is "twenty-two billion, five hundred forty-three million, one hundred twenty thousand, three hundred forty-nine".