20660355113310 has 320 divisors, whose sum is σ = 62714983795200. Its totient is φ = 4834203897600.

The previous prime is 20660355113231. The next prime is 20660355113317. The reversal of 20660355113310 is 1331155306602.

20660355113310 is a `hidden beast` number, since 2 + 0 + 6 + 60 + 3 + 551 + 1 + 33 + 10 = 666.

It is a super-2 number, since 2×20660355113310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20660355113317) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 857584365 + ... + 857608455.

It is an arithmetic number, because the mean of its divisors is an integer number (195984324360).

Almost surely, 2^{20660355113310} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20660355113310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31357491897600).

20660355113310 is an abundant number, since it is smaller than the sum of its proper divisors (42054628681890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20660355113310 is a wasteful number, since it uses less digits than its factorization.

20660355113310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27469 (or 27460 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The spelling of 20660355113310 in words is "twenty trillion, six hundred sixty billion, three hundred fifty-five million, one hundred thirteen thousand, three hundred ten".