20424254790720 has 224 divisors, whose sum is σ = 70746771603456. Its totient is φ = 4951013939200.

The previous prime is 20424254790713. The next prime is 20424254790773. The reversal of 20424254790720 is 2709745242402.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 20424254790720.

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 31 ways as a sum of consecutive naturals, for example, 190522735 + ... + 190629905.

Almost surely, 2^{20424254790720} is an apocalyptic number.

20424254790720 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 20424254790720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35373385801728).

20424254790720 is an abundant number, since it is smaller than the sum of its proper divisors (50322516812736).

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

20424254790720 is a wasteful number, since it uses less digits than its factorization.

20424254790720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125249 (or 125239 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 48.

The spelling of 20424254790720 in words is "twenty trillion, four hundred twenty-four billion, two hundred fifty-four million, seven hundred ninety thousand, seven hundred twenty".