20385466303840 has 48 divisors (see below), whose sum is σ = 52538906342160. Its totient is φ = 7412896837120.

The previous prime is 20385466303757. The next prime is 20385466303841. The reversal of 20385466303840 is 4830366458302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20385466303841) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5791323895 + ... + 5791327414.

It is an arithmetic number, because the mean of its divisors is an integer number (1094560548795).

Almost surely, 2^{20385466303840} is an apocalyptic number.

20385466303840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20385466303840 is an abundant number, since it is smaller than the sum of its proper divisors (32153440038320).

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

20385466303840 is a wasteful number, since it uses less digits than its factorization.

20385466303840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11582651335 (or 11582651327 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 52.

The spelling of 20385466303840 in words is "twenty trillion, three hundred eighty-five billion, four hundred sixty-six million, three hundred three thousand, eight hundred forty".