22449447451 has 4 divisors (see below), whose sum is σ = 23056189312. Its totient is φ = 21842705592.

The previous prime is 22449447409. The next prime is 22449447479. The reversal of 22449447451 is 15474494422.

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 22449447451 - 2²⁷ = 22315229723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22449447401) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 303370875 + ... + 303370948.

It is an arithmetic number, because the mean of its divisors is an integer number (5764047328).

Almost surely, 2^22449447451 is an apocalyptic number.

22449447451 is a deficient number, since it is larger than the sum of its proper divisors (606741861).

22449447451 is an equidigital number, since it uses as much as digits as its factorization.

22449447451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606741860.

The product of its digits is 1290240, while the sum is 46.

The spelling of 22449447451 in words is "twenty-two billion, four hundred forty-nine million, four hundred forty-seven thousand, four hundred fifty-one".