22791772866 has 32 divisors (see below), whose sum is σ = 46183587840. Its totient is φ = 7497346896.

The previous prime is 22791772853. The next prime is 22791772873. The reversal of 22791772866 is 66827719722.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1035225 + ... + 1057011.

It is an arithmetic number, because the mean of its divisors is an integer number (1443237120).

Almost surely, 2^22791772866 is an apocalyptic number.

22791772866 is an abundant number, since it is smaller than the sum of its proper divisors (23391814974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22791772866 is a wasteful number, since it uses less digits than its factorization.

22791772866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24078.

The product of its digits is 7112448, while the sum is 57.

The spelling of 22791772866 in words is "twenty-two billion, seven hundred ninety-one million, seven hundred seventy-two thousand, eight hundred sixty-six".