82012372571 has 4 divisors (see below), whose sum is σ = 82013001312. Its totient is φ = 82011743832.

The previous prime is 82012372549. The next prime is 82012372583. The reversal of 82012372571 is 17527321028.

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-82012372571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82012372271) 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, 37331 + ... + 406716.

It is an arithmetic number, because the mean of its divisors is an integer number (20503250328).

Almost surely, 2^82012372571 is an apocalyptic number.

82012372571 is a deficient number, since it is larger than the sum of its proper divisors (628741).

82012372571 is a wasteful number, since it uses less digits than its factorization.

82012372571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628740.

The product of its (nonzero) digits is 47040, while the sum is 38.

Adding to 82012372571 its reverse (17527321028), we get a palindrome (99539693599).

The spelling of 82012372571 in words is "eighty-two billion, twelve million, three hundred seventy-two thousand, five hundred seventy-one".