22254464591 has 4 divisors (see below), whose sum is σ = 23222050032. Its totient is φ = 21286879152.

The previous prime is 22254464587. The next prime is 22254464611. The reversal of 22254464591 is 19546445222.

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 22254464591 - 2² = 22254464587 is a prime.

It is a super-2 number, since 2×22254464591² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22254464501) 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, 483792686 + ... + 483792731.

It is an arithmetic number, because the mean of its divisors is an integer number (5805512508).

Almost surely, 2^22254464591 is an apocalyptic number.

22254464591 is a deficient number, since it is larger than the sum of its proper divisors (967585441).

22254464591 is an equidigital number, since it uses as much as digits as its factorization.

22254464591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967585440.

The product of its digits is 691200, while the sum is 44.

The spelling of 22254464591 in words is "twenty-two billion, two hundred fifty-four million, four hundred sixty-four thousand, five hundred ninety-one".