20116755452646 has 192 divisors, whose sum is σ = 47186508657600. Its totient is φ = 6171129151488.

The previous prime is 20116755452609. The next prime is 20116755452659. The reversal of 20116755452646 is 64625455761102.

20116755452646 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 6 + 75 + 5 + 4 + 526 + 46 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20116755452592 and 20116755452601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1347487710 + ... + 1347502638.

It is an arithmetic number, because the mean of its divisors is an integer number (245763065925).

Almost surely, 2^{20116755452646} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20116755452646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23593254328800).

20116755452646 is an abundant number, since it is smaller than the sum of its proper divisors (27069753204954).

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

20116755452646 is a wasteful number, since it uses less digits than its factorization.

20116755452646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15543 (or 15540 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 54.

The spelling of 20116755452646 in words is "twenty trillion, one hundred sixteen billion, seven hundred fifty-five million, four hundred fifty-two thousand, six hundred forty-six".