20444542024320 has 128 divisors (see below), whose sum is σ = 72407753064000. Its totient is φ = 5451877868544.

The previous prime is 20444542024253. The next prime is 20444542024451. The reversal of 20444542024320 is 2342024544402.

It is a happy number.

20444542024320 is a `hidden beast` number, since 2 + 0 + 4 + 445 + 4 + 202 + 4 + 3 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591549330 + ... + 591583889.

Almost surely, 2^{20444542024320} is an apocalyptic number.

20444542024320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20444542024320 is an abundant number, since it is smaller than the sum of its proper divisors (51963211039680).

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

20444542024320 is a wasteful number, since it uses less digits than its factorization.

20444542024320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183133247 (or 1183133229 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 36.

Adding to 20444542024320 its reverse (2342024544402), we get a palindrome (22786566568722).

The spelling of 20444542024320 in words is "twenty trillion, four hundred forty-four billion, five hundred forty-two million, twenty-four thousand, three hundred twenty".