82666591591653 has 12 divisors (see below), whose sum is σ = 119426832383820. Its totient is φ = 55102045637376.

The previous prime is 82666591591643. The next prime is 82666591591693. The reversal of 82666591591653 is 35619519566628.

It can be written as a sum of positive squares in 2 ways, for example, as 48013507755684 + 34653083835969 = 6929178^2 + 5886687^2 .

It is not a de Polignac number, because 82666591591653 - 2²⁴ = 82666574814437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82666591591643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 751227238 + ... + 751337271.

It is an arithmetic number, because the mean of its divisors is an integer number (9952236031985).

Almost surely, 2^{82666591591653} is an apocalyptic number.

It is an amenable number.

82666591591653 is a deficient number, since it is larger than the sum of its proper divisors (36760240792167).

82666591591653 is a wasteful number, since it uses less digits than its factorization.

82666591591653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502570628 (or 1502570625 counting only the distinct ones).

The product of its digits is 629856000, while the sum is 72.

The spelling of 82666591591653 in words is "eighty-two trillion, six hundred sixty-six billion, five hundred ninety-one million, five hundred ninety-one thousand, six hundred fifty-three".