20662360857600 has 2112 divisors, whose sum is σ = 88424740454400. Its totient is φ = 4129652736000.

The previous prime is 20662360857577. The next prime is 20662360857613. The reversal of 20662360857600 is 675806326602.

It is a tau number, because it is divible by the number of its divisors (2112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 49313510191 + ... + 49313510609.

Almost surely, 2^{20662360857600} is an apocalyptic number.

20662360857600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20662360857600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44212370227200).

20662360857600 is an abundant number, since it is smaller than the sum of its proper divisors (67762379596800).

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

20662360857600 is a wasteful number, since it uses less digits than its factorization.

20662360857600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 20662360857600 in words is "twenty trillion, six hundred sixty-two billion, three hundred sixty million, eight hundred fifty-seven thousand, six hundred".