82665387047885 has 16 divisors (see below), whose sum is σ = 99669325403712. Its totient is φ = 65818406908800.

The previous prime is 82665387047879. The next prime is 82665387047963. The reversal of 82665387047885 is 58874078356628.

It is not a de Polignac number, because 82665387047885 - 2¹⁸ = 82665386785741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242237897 + ... + 242578913.

It is an arithmetic number, because the mean of its divisors is an integer number (6229332837732).

Almost surely, 2^{82665387047885} is an apocalyptic number.

It is an amenable number.

82665387047885 is a deficient number, since it is larger than the sum of its proper divisors (17003938355827).

82665387047885 is a wasteful number, since it uses less digits than its factorization.

82665387047885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571004.

The product of its (nonzero) digits is 4335206400, while the sum is 77.

The spelling of 82665387047885 in words is "eighty-two trillion, six hundred sixty-five billion, three hundred eighty-seven million, forty-seven thousand, eight hundred eighty-five".