82768321003 has 4 divisors (see below), whose sum is σ = 82768967200. Its totient is φ = 82767674808.

The previous prime is 82768320889. The next prime is 82768321007. The reversal of 82768321003 is 30012386728.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82768321003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82768321007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59028 + ... + 411121.

It is an arithmetic number, because the mean of its divisors is an integer number (20692241800).

Almost surely, 2^82768321003 is an apocalyptic number.

82768321003 is a deficient number, since it is larger than the sum of its proper divisors (646197).

82768321003 is a wasteful number, since it uses less digits than its factorization.

82768321003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646196.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 82768321003 in words is "eighty-two billion, seven hundred sixty-eight million, three hundred twenty-one thousand, three".