82809206372 has 6 divisors (see below), whose sum is σ = 144916111158. Its totient is φ = 41404603184.

The previous prime is 82809206357. The next prime is 82809206393. The reversal of 82809206372 is 27360290828.

It can be written as a sum of positive squares in only one way, i.e., 81079145536 + 1730060836 = 284744^2 + 41594^2 .

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, 10351150793 + ... + 10351150800.

It is an arithmetic number, because the mean of its divisors is an integer number (24152685193).

Almost surely, 2^82809206372 is an apocalyptic number.

It is an amenable number.

82809206372 is a deficient number, since it is larger than the sum of its proper divisors (62106904786).

82809206372 is a wasteful number, since it uses less digits than its factorization.

82809206372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20702301597 (or 20702301595 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 82809206372 in words is "eighty-two billion, eight hundred nine million, two hundred six thousand, three hundred seventy-two".