20666313360001 has 4 divisors (see below), whose sum is σ = 20756559270100. Its totient is φ = 20576067449904.

The previous prime is 20666313359977. The next prime is 20666313360023. The reversal of 20666313360001 is 10006331366602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7963255061776 + 12703058298225 = 2821924^2 + 3564135^2 .

It is a cyclic number.

It is not a de Polignac number, because 20666313360001 - 2¹⁹ = 20666312835713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20666313300001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45122954706 + ... + 45122955163.

It is an arithmetic number, because the mean of its divisors is an integer number (5189139817525).

Almost surely, 2^{20666313360001} is an apocalyptic number.

It is an amenable number.

20666313360001 is a deficient number, since it is larger than the sum of its proper divisors (90245910099).

20666313360001 is an equidigital number, since it uses as much as digits as its factorization.

20666313360001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90245910098.

The product of its (nonzero) digits is 69984, while the sum is 37.

The spelling of 20666313360001 in words is "twenty trillion, six hundred sixty-six billion, three hundred thirteen million, three hundred sixty thousand, one".