22264966781 has 4 divisors (see below), whose sum is σ = 22307702364. Its totient is φ = 22222231200.

The previous prime is 22264966777. The next prime is 22264966799. The reversal of 22264966781 is 18766946222.

It is a happy number.

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 13278874756 + 8986092025 = 115234^2 + 94795^2 .

It is a cyclic number.

It is not a de Polignac number, because 22264966781 - 2² = 22264966777 is a prime.

It is a super-2 number, since 2×22264966781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22264966721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21367010 + ... + 21368051.

It is an arithmetic number, because the mean of its divisors is an integer number (5576925591).

Almost surely, 2^22264966781 is an apocalyptic number.

It is an amenable number.

22264966781 is a deficient number, since it is larger than the sum of its proper divisors (42735583).

22264966781 is an equidigital number, since it uses as much as digits as its factorization.

22264966781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42735582.

The product of its digits is 3483648, while the sum is 53.

The spelling of 22264966781 in words is "twenty-two billion, two hundred sixty-four million, nine hundred sixty-six thousand, seven hundred eighty-one".