823728804361 has 8 divisors (see below), whose sum is σ = 829696266464. Its totient is φ = 817772487840.

The previous prime is 823728804347. The next prime is 823728804391. The reversal of 823728804361 is 163408827328.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 823728804361 - 2¹⁹ = 823728280073 is a prime.

It is a super-2 number, since 2×823728804361² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 823728804299 and 823728804308.

It is not an unprimeable number, because it can be changed into a prime (823728804391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2638020 + ... + 2933701.

It is an arithmetic number, because the mean of its divisors is an integer number (103712033308).

Almost surely, 2^823728804361 is an apocalyptic number.

It is an amenable number.

823728804361 is a deficient number, since it is larger than the sum of its proper divisors (5967462103).

823728804361 is a wasteful number, since it uses less digits than its factorization.

823728804361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5572791.

The product of its (nonzero) digits is 3096576, while the sum is 52.

The spelling of 823728804361 in words is "eight hundred twenty-three billion, seven hundred twenty-eight million, eight hundred four thousand, three hundred sixty-one".