20668068134420 has 48 divisors (see below), whose sum is σ = 49611734565120. Its totient is φ = 7084998925824.

The previous prime is 20668068134407. The next prime is 20668068134501. The reversal of 20668068134420 is 2443186086602.

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, 11624165 + ... + 13283724.

It is an arithmetic number, because the mean of its divisors is an integer number (1033577803440).

Almost surely, 2^{20668068134420} is an apocalyptic number.

20668068134420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20668068134420 is an abundant number, since it is smaller than the sum of its proper divisors (28943666430700).

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

20668068134420 is a wasteful number, since it uses less digits than its factorization.

20668068134420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24913832 (or 24913830 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 50.

The spelling of 20668068134420 in words is "twenty trillion, six hundred sixty-eight billion, sixty-eight million, one hundred thirty-four thousand, four hundred twenty".