22788921601 has 4 divisors (see below), whose sum is σ = 22789347412. Its totient is φ = 22788495792.

The previous prime is 22788921581. The next prime is 22788921641. The reversal of 22788921601 is 10612988722.

It is a Cunningham number, because it is equal to 150960²+1.

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 20299410576 + 2489511025 = 142476^2 + 49895^2 .

It is a cyclic number.

It is not a de Polignac number, because 22788921601 - 2¹⁵ = 22788888833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22788921641) 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, 118746 + ... + 244291.

It is an arithmetic number, because the mean of its divisors is an integer number (5697336853).

Almost surely, 2^22788921601 is an apocalyptic number.

It is an amenable number.

22788921601 is a deficient number, since it is larger than the sum of its proper divisors (425811).

22788921601 is an equidigital number, since it uses as much as digits as its factorization.

22788921601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425810.

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 22788921601 in words is "twenty-two billion, seven hundred eighty-eight million, nine hundred twenty-one thousand, six hundred one".