82864869806 has 4 divisors (see below), whose sum is σ = 124297304712. Its totient is φ = 41432434902.

The previous prime is 82864869781. The next prime is 82864869811. The reversal of 82864869806 is 60896846828.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20716217450 + ... + 20716217453.

It is an arithmetic number, because the mean of its divisors is an integer number (31074326178).

Almost surely, 2^82864869806 is an apocalyptic number.

82864869806 is a deficient number, since it is larger than the sum of its proper divisors (41432434906).

82864869806 is a wasteful number, since it uses less digits than its factorization.

82864869806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41432434905.

The product of its (nonzero) digits is 63700992, while the sum is 65.

The spelling of 82864869806 in words is "eighty-two billion, eight hundred sixty-four million, eight hundred sixty-nine thousand, eight hundred six".