82640255772185 has 8 divisors (see below), whose sum is σ = 100363105805760. Its totient is φ = 65315672031664.

The previous prime is 82640255772181. The next prime is 82640255772211. The reversal of 82640255772185 is 58127755204628.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82640255772185 - 2² = 82640255772181 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82640255772181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99566572805 + ... + 99566573634.

It is an arithmetic number, because the mean of its divisors is an integer number (12545388225720).

Almost surely, 2^{82640255772185} is an apocalyptic number.

It is an amenable number.

82640255772185 is a deficient number, since it is larger than the sum of its proper divisors (17722850033575).

82640255772185 is a wasteful number, since it uses less digits than its factorization.

82640255772185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199133146527.

The product of its (nonzero) digits is 75264000, while the sum is 62.

The spelling of 82640255772185 in words is "eighty-two trillion, six hundred forty billion, two hundred fifty-five million, seven hundred seventy-two thousand, one hundred eighty-five".