20446385845824 has 63 divisors (see below), whose sum is σ = 58606184380107. Its totient is φ = 6815425774464.

The previous prime is 20446385845759. The next prime is 20446385845829. The reversal of 20446385845824 is 42854858364402.

The square root of 20446385845824 is 4521768.

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

20446385845824 is a `hidden beast` number, since 2 + 0 + 4 + 46 + 3 + 8 + 5 + 8 + 4 + 582 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (20446385845829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 108428229 + ... + 108616635.

Almost surely, 2^{20446385845824} is an apocalyptic number.

20446385845824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

20446385845824 is the 4521768-th square number.

It is an amenable number.

20446385845824 is an abundant number, since it is smaller than the sum of its proper divisors (38159798534283).

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

20446385845824 is an frugal number, since it uses more digits than its factorization.

20446385845824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376832 (or 188412 counting only the distinct ones).

The product of its (nonzero) digits is 235929600, while the sum is 63.

The spelling of 20446385845824 in words is "twenty trillion, four hundred forty-six billion, three hundred eighty-five million, eight hundred forty-five thousand, eight hundred twenty-four".