20546403774336 has 384 divisors, whose sum is σ = 69796440080640. Its totient is φ = 5955477073920.

The previous prime is 20546403774283. The next prime is 20546403774349. The reversal of 20546403774336 is 63347730464502.

20546403774336 is a `hidden beast` number, since 20 + 546 + 4 + 0 + 3 + 7 + 7 + 43 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-3 number, since 3×20546403774336³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6563836 + ... + 9174788.

It is an arithmetic number, because the mean of its divisors is an integer number (181761562710).

Almost surely, 2^{20546403774336} 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 20546403774336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34898220040320).

20546403774336 is an abundant number, since it is smaller than the sum of its proper divisors (49250036306304).

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

20546403774336 is a wasteful number, since it uses less digits than its factorization.

20546403774336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611016 (or 2610992 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 54.

The spelling of 20546403774336 in words is "twenty trillion, five hundred forty-six billion, four hundred three million, seven hundred seventy-four thousand, three hundred thirty-six".