823038487443 has 24 divisors (see below), whose sum is σ = 1211892671808. Its totient is φ = 538121727792.

The previous prime is 823038487433. The next prime is 823038487511. The reversal of 823038487443 is 344784830328.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-823038487443 is a prime.

It is a super-2 number, since 2×823038487443² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 823038487443.

It is not an unprimeable number, because it can be changed into a prime (823038487433) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2869521 + ... + 3143282.

It is an arithmetic number, because the mean of its divisors is an integer number (50495527992).

Almost surely, 2^823038487443 is an apocalyptic number.

823038487443 is a deficient number, since it is larger than the sum of its proper divisors (388854184365).

823038487443 is a wasteful number, since it uses less digits than its factorization.

823038487443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6013103 (or 6013100 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 54.

The spelling of 823038487443 in words is "eight hundred twenty-three billion, thirty-eight million, four hundred eighty-seven thousand, four hundred forty-three".