22075888661 has 4 divisors (see below), whose sum is σ = 22076314572. Its totient is φ = 22075462752.

The previous prime is 22075888619. The next prime is 22075888693. The reversal of 22075888661 is 16688857022.

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 1332688036 + 20743200625 = 36506^2 + 144025^2 .

It is a cyclic number.

It is not a de Polignac number, because 22075888661 - 2³⁴ = 4896019477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22075887661) 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, 122360 + ... + 243153.

It is an arithmetic number, because the mean of its divisors is an integer number (5519078643).

Almost surely, 2^22075888661 is an apocalyptic number.

It is an amenable number.

22075888661 is a deficient number, since it is larger than the sum of its proper divisors (425911).

22075888661 is an equidigital number, since it uses as much as digits as its factorization.

22075888661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425910.

The product of its (nonzero) digits is 2580480, while the sum is 53.

The spelling of 22075888661 in words is "twenty-two billion, seventy-five million, eight hundred eighty-eight thousand, six hundred sixty-one".