82643040874857 has 16 divisors (see below), whose sum is σ = 112888406191680. Its totient is φ = 53746758700800.

The previous prime is 82643040874831. The next prime is 82643040874873. The reversal of 82643040874857 is 75847804034628.

It is not a de Polignac number, because 82643040874857 - 2¹⁶ = 82643040809321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82643040874957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28699132 + ... + 31447197.

It is an arithmetic number, because the mean of its divisors is an integer number (7055525386980).

Almost surely, 2^{82643040874857} is an apocalyptic number.

It is an amenable number.

82643040874857 is a deficient number, since it is larger than the sum of its proper divisors (30245365316823).

82643040874857 is a wasteful number, since it uses less digits than its factorization.

82643040874857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60157544.

The product of its (nonzero) digits is 289013760, while the sum is 66.

The spelling of 82643040874857 in words is "eighty-two trillion, six hundred forty-three billion, forty million, eight hundred seventy-four thousand, eight hundred fifty-seven".