20660133896964 has 189 divisors, whose sum is σ = 55589526014799. Its totient is φ = 6715470084480.

The previous prime is 20660133896917. The next prime is 20660133896971. The reversal of 20660133896964 is 46969833106602.

It is a happy number.

The square root of 20660133896964 is 4545342.

It is a perfect power (a square), and thus also a powerful number.

20660133896964 is a `hidden beast` number, since 206 + 6 + 0 + 1 + 338 + 9 + 6 + 96 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5605671816900 + 15054462080064 = 2367630^2 + 3880008^2 .

It is a super-2 number, since 2×20660133896964² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 10063386162 + ... + 10063388214.

Almost surely, 2^{20660133896964} is an apocalyptic number.

20660133896964 is the 4545342-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20660133896964

20660133896964 is an abundant number, since it is smaller than the sum of its proper divisors (34929392117835).

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

20660133896964 is an frugal number, since it uses more digits than its factorization.

20660133896964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210 (or 2099 counting only the distinct ones).

The product of its (nonzero) digits is 60466176, while the sum is 63.

The spelling of 20660133896964 in words is "twenty trillion, six hundred sixty billion, one hundred thirty-three million, eight hundred ninety-six thousand, nine hundred sixty-four".