82771665318822 has 64 divisors (see below), whose sum is σ = 173296418734080. Its totient is φ = 26323535767200.

The previous prime is 82771665318767. The next prime is 82771665318847. The reversal of 82771665318822 is 22881356617728.

It is a super-2 number, since 2×82771665318822² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 434897293 + ... + 435087575.

It is an arithmetic number, because the mean of its divisors is an integer number (2707756542720).

Almost surely, 2^{82771665318822} is an apocalyptic number.

82771665318822 is an abundant number, since it is smaller than the sum of its proper divisors (90524753415258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82771665318822 is a wasteful number, since it uses less digits than its factorization.

82771665318822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223329.

The product of its digits is 108380160, while the sum is 66.

The spelling of 82771665318822 in words is "eighty-two trillion, seven hundred seventy-one billion, six hundred sixty-five million, three hundred eighteen thousand, eight hundred twenty-two".