843766406660 has 12 divisors (see below), whose sum is σ = 1771909454028. Its totient is φ = 337506562656.

The previous prime is 843766406641. The next prime is 843766406669. The reversal of 843766406660 is 66604667348.

It can be written as a sum of positive squares in 2 ways, for example, as 157151987776 + 686614418884 = 396424^2 + 828622^2 .

It is a junction number, because it is equal to n+sod(n) for n = 843766406596 and 843766406605.

It is not an unprimeable number, because it can be changed into a prime (843766406669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21094160147 + ... + 21094160186.

It is an arithmetic number, because the mean of its divisors is an integer number (147659121169).

Almost surely, 2^843766406660 is an apocalyptic number.

It is an amenable number.

843766406660 is an abundant number, since it is smaller than the sum of its proper divisors (928143047368).

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

843766406660 is a wasteful number, since it uses less digits than its factorization.

843766406660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42188320342 (or 42188320340 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 56.

The spelling of 843766406660 in words is "eight hundred forty-three billion, seven hundred sixty-six million, four hundred six thousand, six hundred sixty".