823545970497 has 24 divisors (see below), whose sum is σ = 1287661920480. Its totient is φ = 520134291000.

The previous prime is 823545970483. The next prime is 823545970543. The reversal of 823545970497 is 794079545328.

823545970497 is a `hidden beast` number, since 8 + 2 + 3 + 54 + 5 + 97 + 0 + 497 = 666.

It is not a de Polignac number, because 823545970497 - 2⁸ = 823545970241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (823545970417) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42236379 + ... + 42255872.

It is an arithmetic number, because the mean of its divisors is an integer number (53652580020).

Almost surely, 2^823545970497 is an apocalyptic number.

It is an amenable number.

823545970497 is a deficient number, since it is larger than the sum of its proper divisors (464115949983).

823545970497 is a wasteful number, since it uses less digits than its factorization.

823545970497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84492298 (or 84492273 counting only the distinct ones).

The product of its (nonzero) digits is 76204800, while the sum is 63.

The spelling of 823545970497 in words is "eight hundred twenty-three billion, five hundred forty-five million, nine hundred seventy thousand, four hundred ninety-seven".