22555432351 has 4 divisors (see below), whose sum is σ = 22827184632. Its totient is φ = 22283680072.

The previous prime is 22555432337. The next prime is 22555432357. The reversal of 22555432351 is 15323455522.

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 22555432351 - 2¹⁹ = 22554908063 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 22555432351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22555432357) 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, 135876016 + ... + 135876181.

It is an arithmetic number, because the mean of its divisors is an integer number (5706796158).

Almost surely, 2^22555432351 is an apocalyptic number.

22555432351 is a deficient number, since it is larger than the sum of its proper divisors (271752281).

22555432351 is an equidigital number, since it uses as much as digits as its factorization.

22555432351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271752280.

The product of its digits is 180000, while the sum is 37.

Adding to 22555432351 its reverse (15323455522), we get a palindrome (37878887873).

The spelling of 22555432351 in words is "twenty-two billion, five hundred fifty-five million, four hundred thirty-two thousand, three hundred fifty-one".