20544842054160 has 280 divisors, whose sum is σ = 72480251841984. Its totient is φ = 5412615747840.

The previous prime is 20544842054141. The next prime is 20544842054221. The reversal of 20544842054160 is 6145024844502.

20544842054160 is a `hidden beast` number, since 2 + 0 + 5 + 4 + 4 + 8 + 42 + 0 + 541 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2718405 + ... + 6962715.

Almost surely, 2^{20544842054160} is an apocalyptic number.

20544842054160 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 20544842054160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36240125920992).

20544842054160 is an abundant number, since it is smaller than the sum of its proper divisors (51935409787824).

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

20544842054160 is an equidigital number, since it uses as much as digits as its factorization.

20544842054160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4244425 (or 4244404 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 45.

Adding to 20544842054160 its reverse (6145024844502), we get a palindrome (26689866898662).

The spelling of 20544842054160 in words is "twenty trillion, five hundred forty-four billion, eight hundred forty-two million, fifty-four thousand, one hundred sixty".