82061248813 has 4 divisors (see below), whose sum is σ = 82828176480. Its totient is φ = 81294321148.

The previous prime is 82061248807. The next prime is 82061248847. The reversal of 82061248813 is 31884216028.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82061248813 is a prime.

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 82061248813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82061248013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383463673 + ... + 383463886.

It is an arithmetic number, because the mean of its divisors is an integer number (20707044120).

Almost surely, 2^82061248813 is an apocalyptic number.

It is an amenable number.

82061248813 is a deficient number, since it is larger than the sum of its proper divisors (766927667).

82061248813 is a wasteful number, since it uses less digits than its factorization.

82061248813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766927666.

The product of its (nonzero) digits is 147456, while the sum is 43.

The spelling of 82061248813 in words is "eighty-two billion, sixty-one million, two hundred forty-eight thousand, eight hundred thirteen".