22145435134423 has 4 divisors (see below), whose sum is σ = 22146212223000. Its totient is φ = 22144658045848.

The previous prime is 22145435134391. The next prime is 22145435134441. The reversal of 22145435134423 is 32443153454122.

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 22145435134423 - 2⁵ = 22145435134391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22145435134423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22145405134423) 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, 388501540 + ... + 388558537.

It is an arithmetic number, because the mean of its divisors is an integer number (5536553055750).

Almost surely, 2^{22145435134423} is an apocalyptic number.

22145435134423 is a deficient number, since it is larger than the sum of its proper divisors (777088577).

22145435134423 is an equidigital number, since it uses as much as digits as its factorization.

22145435134423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777088576.

The product of its digits is 1382400, while the sum is 43.

Adding to 22145435134423 its reverse (32443153454122), we get a palindrome (54588588588545).

The spelling of 22145435134423 in words is "twenty-two trillion, one hundred forty-five billion, four hundred thirty-five million, one hundred thirty-four thousand, four hundred twenty-three".