20420289710080 has 384 divisors, whose sum is σ = 53121299212800. Its totient is φ = 7489172275200.

The previous prime is 20420289710077. The next prime is 20420289710099. The reversal of 20420289710080 is 8001798202402.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21030163995 + ... + 21030164965.

It is an arithmetic number, because the mean of its divisors is an integer number (138336716700).

Almost surely, 2^{20420289710080} is an apocalyptic number.

20420289710080 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 20420289710080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26560649606400).

20420289710080 is an abundant number, since it is smaller than the sum of its proper divisors (32701009502720).

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

20420289710080 is a wasteful number, since it uses less digits than its factorization.

20420289710080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911 (or 1891 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 20420289710080 in words is "twenty trillion, four hundred twenty billion, two hundred eighty-nine million, seven hundred ten thousand, eighty".