82820657113 has 4 divisors (see below), whose sum is σ = 83348177380. Its totient is φ = 82293136848.

The previous prime is 82820657111. The next prime is 82820657147. The reversal of 82820657113 is 31175602828.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13532203584 + 69288453529 = 116328^2 + 263227^2 .

It is a cyclic number.

It is not a de Polignac number, because 82820657113 - 2¹ = 82820657111 is a prime.

It is a super-2 number, since 2×82820657113² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82820657113.

It is not an unprimeable number, because it can be changed into a prime (82820657111) 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, 263759898 + ... + 263760211.

It is an arithmetic number, because the mean of its divisors is an integer number (20837044345).

Almost surely, 2^82820657113 is an apocalyptic number.

It is an amenable number.

82820657113 is a deficient number, since it is larger than the sum of its proper divisors (527520267).

82820657113 is a wasteful number, since it uses less digits than its factorization.

82820657113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527520266.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 82820657113 in words is "eighty-two billion, eight hundred twenty million, six hundred fifty-seven thousand, one hundred thirteen".