11721700566602 has 96 divisors (see below), whose sum is σ = 19641630952944. Its totient is φ = 5213513410560.

The previous prime is 11721700566571. The next prime is 11721700566607. The reversal of 11721700566602 is 20666500712711.

It can be written as a sum of positive squares in 24 ways, for example, as 14839868761 + 11706860697841 = 121819^2 + 3421529^2 .

It is not an unprimeable number, because it can be changed into a prime (11721700566607) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5296745648 + ... + 5296747860.

Almost surely, 2^{11721700566602} is an apocalyptic number.

11721700566602 is a deficient number, since it is larger than the sum of its proper divisors (7919930386342).

11721700566602 is a wasteful number, since it uses less digits than its factorization.

11721700566602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436 (or 3375 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 11721700566602 in words is "eleven trillion, seven hundred twenty-one billion, seven hundred million, five hundred sixty-six thousand, six hundred two".