22780720895 has 4 divisors (see below), whose sum is σ = 27336865080. Its totient is φ = 18224576712.

The previous prime is 22780720889. The next prime is 22780720927. The reversal of 22780720895 is 59802708722.

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 22780720895 - 2³⁰ = 21706979071 is a prime.

It is a super-2 number, since 2×22780720895² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2278072085 + ... + 2278072094.

It is an arithmetic number, because the mean of its divisors is an integer number (6834216270).

Almost surely, 2^22780720895 is an apocalyptic number.

22780720895 is a deficient number, since it is larger than the sum of its proper divisors (4556144185).

22780720895 is an equidigital number, since it uses as much as digits as its factorization.

22780720895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4556144184.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 22780720895 in words is "twenty-two billion, seven hundred eighty million, seven hundred twenty thousand, eight hundred ninety-five".