20666503303001 has 8 divisors (see below), whose sum is σ = 21488881234944. Its totient is φ = 19853857654560.

The previous prime is 20666503302919. The next prime is 20666503303087. The reversal of 20666503303001 is 10030330566602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20666503303001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20666503303601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2433066545 + ... + 2433075038.

It is an arithmetic number, because the mean of its divisors is an integer number (2686110154368).

Almost surely, 2^{20666503303001} is an apocalyptic number.

It is an amenable number.

20666503303001 is a deficient number, since it is larger than the sum of its proper divisors (822377931943).

20666503303001 is a wasteful number, since it uses less digits than its factorization.

20666503303001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4866141751.

The product of its (nonzero) digits is 58320, while the sum is 35.

Adding to 20666503303001 its reverse (10030330566602), we get a palindrome (30696833869603).

The spelling of 20666503303001 in words is "twenty trillion, six hundred sixty-six billion, five hundred three million, three hundred three thousand, one".