66361368611 has 8 divisors (see below), whose sum is σ = 69605025600. Its totient is φ = 63194033088.

The previous prime is 66361368587. The next prime is 66361368613. The reversal of 66361368611 is 11686316366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66361368611 - 2²² = 66357174307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66361368613) 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 7 ways as a sum of consecutive naturals, for example, 19078586 + ... + 19082063.

It is an arithmetic number, because the mean of its divisors is an integer number (8700628200).

Almost surely, 2^66361368611 is an apocalyptic number.

66361368611 is a deficient number, since it is larger than the sum of its proper divisors (3243656989).

66361368611 is a wasteful number, since it uses less digits than its factorization.

66361368611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38160733.

The product of its digits is 559872, while the sum is 47.

The spelling of 66361368611 in words is "sixty-six billion, three hundred sixty-one million, three hundred sixty-eight thousand, six hundred eleven".