823007715385 has 48 divisors (see below), whose sum is σ = 1016306516160. Its totient is φ = 639797719680.

The previous prime is 823007715377. The next prime is 823007715449. The reversal of 823007715385 is 583517700328.

It is not a de Polignac number, because 823007715385 - 2³ = 823007715377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1762328922 + ... + 1762329388.

It is an arithmetic number, because the mean of its divisors is an integer number (21173052420).

Almost surely, 2^823007715385 is an apocalyptic number.

It is an amenable number.

823007715385 is a deficient number, since it is larger than the sum of its proper divisors (193298800775).

823007715385 is a wasteful number, since it uses less digits than its factorization.

823007715385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366 (or 1319 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 823007715385 in words is "eight hundred twenty-three billion, seven million, seven hundred fifteen thousand, three hundred eighty-five".