20801420682140 has 48 divisors (see below), whose sum is σ = 49930434590400. Its totient is φ = 7130912097792.

The previous prime is 20801420682137. The next prime is 20801420682167. The reversal of 20801420682140 is 4128602410802.

It is a junction number, because it is equal to n+sod(n) for n = 20801420682094 and 20801420682103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9454985 + ... + 11445504.

It is an arithmetic number, because the mean of its divisors is an integer number (1040217387300).

Almost surely, 2^{20801420682140} is an apocalyptic number.

20801420682140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20801420682140 is an abundant number, since it is smaller than the sum of its proper divisors (29129013908260).

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

20801420682140 is a wasteful number, since it uses less digits than its factorization.

20801420682140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20907614 (or 20907612 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 38.

The spelling of 20801420682140 in words is "twenty trillion, eight hundred one billion, four hundred twenty million, six hundred eighty-two thousand, one hundred forty".