823031867636 has 12 divisors (see below), whose sum is σ = 1571242656480. Its totient is φ = 374105394360.

The previous prime is 823031867629. The next prime is 823031867677. The reversal of 823031867636 is 636768130328.

823031867636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9352634816 + ... + 9352634903.

It is an arithmetic number, because the mean of its divisors is an integer number (130936888040).

Almost surely, 2^823031867636 is an apocalyptic number.

It is an amenable number.

823031867636 is a deficient number, since it is larger than the sum of its proper divisors (748210788844).

823031867636 is a wasteful number, since it uses less digits than its factorization.

823031867636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18705269734 (or 18705269732 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 823031867636 in words is "eight hundred twenty-three billion, thirty-one million, eight hundred sixty-seven thousand, six hundred thirty-six".