22261452445 has 4 divisors (see below), whose sum is σ = 26713742940. Its totient is φ = 17809161952.

The previous prime is 22261452413. The next prime is 22261452461. The reversal of 22261452445 is 54425416222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2290675321 + 19970777124 = 47861^2 + 141318^2 .

It is a cyclic number.

It is not a de Polignac number, because 22261452445 - 2⁵ = 22261452413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2226145240 + ... + 2226145249.

It is an arithmetic number, because the mean of its divisors is an integer number (6678435735).

Almost surely, 2^22261452445 is an apocalyptic number.

It is an amenable number.

22261452445 is a deficient number, since it is larger than the sum of its proper divisors (4452290495).

22261452445 is an equidigital number, since it uses as much as digits as its factorization.

22261452445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4452290494.

The product of its digits is 153600, while the sum is 37.

Adding to 22261452445 its reverse (54425416222), we get a palindrome (76686868667).

The spelling of 22261452445 in words is "twenty-two billion, two hundred sixty-one million, four hundred fifty-two thousand, four hundred forty-five".