823641242796 has 18 divisors (see below), whose sum is σ = 2081982030492. Its totient is φ = 274547080920.

The previous prime is 823641242779. The next prime is 823641242833. The reversal of 823641242796 is 697242146328.

It is a happy number.

823641242796 is a `hidden beast` number, since 8 + 2 + 364 + 1 + 2 + 4 + 279 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11439461670 + ... + 11439461741.

Almost surely, 2^823641242796 is an apocalyptic number.

It is an amenable number.

823641242796 is an abundant number, since it is smaller than the sum of its proper divisors (1258340787696).

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

823641242796 is a wasteful number, since it uses less digits than its factorization.

823641242796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22878923421 (or 22878923416 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The spelling of 823641242796 in words is "eight hundred twenty-three billion, six hundred forty-one million, two hundred forty-two thousand, seven hundred ninety-six".