22040432551 has 4 divisors (see below), whose sum is σ = 22213979392. Its totient is φ = 21866885712.

The previous prime is 22040432507. The next prime is 22040432563. The reversal of 22040432551 is 15523404022.

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 22040432551 - 2⁷ = 22040432423 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 (22040432591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86773230 + ... + 86773483.

It is an arithmetic number, because the mean of its divisors is an integer number (5553494848).

Almost surely, 2^22040432551 is an apocalyptic number.

22040432551 is a deficient number, since it is larger than the sum of its proper divisors (173546841).

22040432551 is a wasteful number, since it uses less digits than its factorization.

22040432551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173546840.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 22040432551 its reverse (15523404022), we get a palindrome (37563836573).

The spelling of 22040432551 in words is "twenty-two billion, forty million, four hundred thirty-two thousand, five hundred fifty-one".