823608864402 has 64 divisors (see below), whose sum is σ = 1681677365760. Its totient is φ = 268831436544.

The previous prime is 823608864389. The next prime is 823608864409. The reversal of 823608864402 is 204468806328.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (823608864409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104687673 + ... + 104695539.

It is an arithmetic number, because the mean of its divisors is an integer number (26276208840).

Almost surely, 2^823608864402 is an apocalyptic number.

823608864402 is an abundant number, since it is smaller than the sum of its proper divisors (858068501358).

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

823608864402 is a wasteful number, since it uses less digits than its factorization.

823608864402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9047.

The product of its (nonzero) digits is 3538944, while the sum is 51.

The spelling of 823608864402 in words is "eight hundred twenty-three billion, six hundred eight million, eight hundred sixty-four thousand, four hundred two".