22628865851 has 4 divisors (see below), whose sum is σ = 23409171600. Its totient is φ = 21848560104.

The previous prime is 22628865829. The next prime is 22628865863. The reversal of 22628865851 is 15856882622.

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 22628865851 - 2¹⁰ = 22628864827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22628865793 and 22628865802.

It is not an unprimeable number, because it can be changed into a prime (22628865821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390152831 + ... + 390152888.

It is an arithmetic number, because the mean of its divisors is an integer number (5852292900).

Almost surely, 2^22628865851 is an apocalyptic number.

22628865851 is a deficient number, since it is larger than the sum of its proper divisors (780305749).

22628865851 is an equidigital number, since it uses as much as digits as its factorization.

22628865851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780305748.

The product of its digits is 3686400, while the sum is 53.

The spelling of 22628865851 in words is "twenty-two billion, six hundred twenty-eight million, eight hundred sixty-five thousand, eight hundred fifty-one".