828768972513 has 4 divisors (see below), whose sum is σ = 1105025296688. Its totient is φ = 552512648340.

The previous prime is 828768972497. The next prime is 828768972553. The reversal of 828768972513 is 315279867828.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 828768972513 - 2⁴ = 828768972497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (828768972553) 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 3 ways as a sum of consecutive naturals, for example, 138128162083 + ... + 138128162088.

It is an arithmetic number, because the mean of its divisors is an integer number (276256324172).

Almost surely, 2^828768972513 is an apocalyptic number.

It is an amenable number.

828768972513 is a deficient number, since it is larger than the sum of its proper divisors (276256324175).

828768972513 is a wasteful number, since it uses less digits than its factorization.

828768972513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276256324174.

The product of its digits is 81285120, while the sum is 66.

The spelling of 828768972513 in words is "eight hundred twenty-eight billion, seven hundred sixty-eight million, nine hundred seventy-two thousand, five hundred thirteen".