122643423535 has 4 divisors (see below), whose sum is σ = 147172108248. Its totient is φ = 98114738824.

The previous prime is 122643423523. The next prime is 122643423557. The reversal of 122643423535 is 535324346221.

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 122643423535 - 2¹⁷ = 122643292463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12264342349 + ... + 12264342358.

It is an arithmetic number, because the mean of its divisors is an integer number (36793027062).

Almost surely, 2^122643423535 is an apocalyptic number.

122643423535 is a deficient number, since it is larger than the sum of its proper divisors (24528684713).

122643423535 is an equidigital number, since it uses as much as digits as its factorization.

122643423535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24528684712.

The product of its digits is 518400, while the sum is 40.

Adding to 122643423535 its reverse (535324346221), we get a palindrome (657967769756).

The spelling of 122643423535 in words is "one hundred twenty-two billion, six hundred forty-three million, four hundred twenty-three thousand, five hundred thirty-five".