823718560720 has 40 divisors (see below), whose sum is σ = 2089249806240. Its totient is φ = 299534021760.

The previous prime is 823718560697. The next prime is 823718560733. The reversal of 823718560720 is 27065817328.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468021030 + ... + 468022789.

It is an arithmetic number, because the mean of its divisors is an integer number (52231245156).

Almost surely, 2^823718560720 is an apocalyptic number.

823718560720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

823718560720 is an abundant number, since it is smaller than the sum of its proper divisors (1265531245520).

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

823718560720 is a wasteful number, since it uses less digits than its factorization.

823718560720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936043843 (or 936043837 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 823718560720 in words is "eight hundred twenty-three billion, seven hundred eighteen million, five hundred sixty thousand, seven hundred twenty".