823994075052 has 48 divisors (see below), whose sum is σ = 2136330362880. Its totient is φ = 274658336784.

The previous prime is 823994075039. The next prime is 823994075111. The reversal of 823994075052 is 250570499328.

823994075052 is a `hidden beast` number, since 8 + 2 + 3 + 99 + 40 + 7 + 505 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 823994075052.

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, 8112493 + ... + 8213435.

It is an arithmetic number, because the mean of its divisors is an integer number (44506882560).

Almost surely, 2^823994075052 is an apocalyptic number.

It is an amenable number.

823994075052 is an abundant number, since it is smaller than the sum of its proper divisors (1312336287828).

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

823994075052 is a wasteful number, since it uses less digits than its factorization.

823994075052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176539 (or 176531 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 823994075052 in words is "eight hundred twenty-three billion, nine hundred ninety-four million, seventy-five thousand, fifty-two".