82760606821 has 4 divisors (see below), whose sum is σ = 82783786144. Its totient is φ = 82737427500.

The previous prime is 82760606737. The next prime is 82760606843. The reversal of 82760606821 is 12860606728.

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-82760606821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82760606891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11584305 + ... + 11591446.

It is an arithmetic number, because the mean of its divisors is an integer number (20695946536).

Almost surely, 2^82760606821 is an apocalyptic number.

It is an amenable number.

82760606821 is a deficient number, since it is larger than the sum of its proper divisors (23179323).

82760606821 is a wasteful number, since it uses less digits than its factorization.

82760606821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23179322.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 82760606821 in words is "eighty-two billion, seven hundred sixty million, six hundred six thousand, eight hundred twenty-one".