823666677830 has 32 divisors (see below), whose sum is σ = 1485241090560. Its totient is φ = 328880129760.

The previous prime is 823666677781. The next prime is 823666677859. The reversal of 823666677830 is 38776666328.

It is a happy number.

823666677830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent 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, 19614917 + ... + 19656863.

It is an arithmetic number, because the mean of its divisors is an integer number (46413784080).

Almost surely, 2^823666677830 is an apocalyptic number.

823666677830 is a deficient number, since it is larger than the sum of its proper divisors (661574412730).

823666677830 is a wasteful number, since it uses less digits than its factorization.

823666677830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45404.

The product of its (nonzero) digits is 73156608, while the sum is 62.

The spelling of 823666677830 in words is "eight hundred twenty-three billion, six hundred sixty-six million, six hundred seventy-seven thousand, eight hundred thirty".