20660455366 has 8 divisors (see below), whose sum is σ = 31057909344. Its totient is φ = 10307818920.

The previous prime is 20660455363. The next prime is 20660455373. The reversal of 20660455366 is 66355406602.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20660455363) 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, 11203230 + ... + 11205073.

It is an arithmetic number, because the mean of its divisors is an integer number (3882238668).

Almost surely, 2^20660455366 is an apocalyptic number.

20660455366 is a deficient number, since it is larger than the sum of its proper divisors (10397453978).

20660455366 is a wasteful number, since it uses less digits than its factorization.

20660455366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22408766.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 20660455366 in words is "twenty billion, six hundred sixty million, four hundred fifty-five thousand, three hundred sixty-six".