82820325047 has 4 divisors (see below), whose sum is σ = 82829878536. Its totient is φ = 82810771560.

The previous prime is 82820325013. The next prime is 82820325131. The reversal of 82820325047 is 74052302828.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 82820325047 - 2¹² = 82820320951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82820324995 and 82820325013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82820315047) 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, 4763729 + ... + 4781082.

It is an arithmetic number, because the mean of its divisors is an integer number (20707469634).

Almost surely, 2^82820325047 is an apocalyptic number.

82820325047 is a deficient number, since it is larger than the sum of its proper divisors (9553489).

82820325047 is an equidigital number, since it uses as much as digits as its factorization.

82820325047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9553488.

The product of its (nonzero) digits is 215040, while the sum is 41.

The spelling of 82820325047 in words is "eighty-two billion, eight hundred twenty million, three hundred twenty-five thousand, forty-seven".