823840080579 has 32 divisors (see below), whose sum is σ = 1297985696000. Its totient is φ = 514955895552.

The previous prime is 823840080533. The next prime is 823840080631. The reversal of 823840080579 is 975080048328.

It is a happy number.

823840080579 is a `hidden beast` number, since 8 + 23 + 8 + 40 + 0 + 8 + 0 + 579 = 666.

It is not a de Polignac number, because 823840080579 - 2¹¹ = 823840078531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (823840080509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8228209 + ... + 8327730.

It is an arithmetic number, because the mean of its divisors is an integer number (40562053000).

Almost surely, 2^823840080579 is an apocalyptic number.

823840080579 is a deficient number, since it is larger than the sum of its proper divisors (474145615421).

823840080579 is a wasteful number, since it uses less digits than its factorization.

823840080579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16556064 (or 16556058 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 823840080579 in words is "eight hundred twenty-three billion, eight hundred forty million, eighty thousand, five hundred seventy-nine".