22351322450 has 18 divisors (see below), whose sum is σ = 41575426149. Its totient is φ = 8940106120.

The previous prime is 22351322447. The next prime is 22351322479. The reversal of 22351322450 is 5422315322.

It can be written as a sum of positive squares in 2 ways, for example, as 21904296001 + 447026449 = 148001^2 + 21143^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=105715.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1046579 + ... + 1067721.

Almost surely, 2^22351322450 is an apocalyptic number.

22351322450 is a deficient number, since it is larger than the sum of its proper divisors (19224103699).

22351322450 is an frugal number, since it uses more digits than its factorization.

22351322450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42298 (or 21150 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 22351322450 its reverse (5422315322), we get a palindrome (27773637772).

The spelling of 22351322450 in words is "twenty-two billion, three hundred fifty-one million, three hundred twenty-two thousand, four hundred fifty".