20841945366528 has 1242 divisors, whose sum is σ = 74317991301372. Its totient is φ = 5829914787840.

The previous prime is 20841945366493. The next prime is 20841945366577. The reversal of 20841945366528 is 82566354914802.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

20841945366528 is a `hidden beast` number, since 2 + 0 + 8 + 4 + 1 + 9 + 45 + 3 + 66 + 528 = 666.

It is a super-2 number, since 2×20841945366528² (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 53 ways as a sum of consecutive naturals, for example, 1603226566650 + ... + 1603226566662.

Almost surely, 2^{20841945366528} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20841945366528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37158995650686).

20841945366528 is an abundant number, since it is smaller than the sum of its proper divisors (53476045934844).

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

20841945366528 is an frugal number, since it uses more digits than its factorization.

20841945366528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 29 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 63.

The spelling of 20841945366528 in words is "twenty trillion, eight hundred forty-one billion, nine hundred forty-five million, three hundred sixty-six thousand, five hundred twenty-eight".