20550411066820 has 48 divisors (see below), whose sum is σ = 45795462894720. Its totient is φ = 7729498743296.

The previous prime is 20550411066811. The next prime is 20550411066851. The reversal of 20550411066820 is 2866011405502.

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, 378572917 + ... + 378627196.

It is an arithmetic number, because the mean of its divisors is an integer number (954072143640).

Almost surely, 2^{20550411066820} is an apocalyptic number.

20550411066820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20550411066820 is an abundant number, since it is smaller than the sum of its proper divisors (25245051827900).

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

20550411066820 is a wasteful number, since it uses less digits than its factorization.

20550411066820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757200204 (or 757200202 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 20550411066820 in words is "twenty trillion, five hundred fifty billion, four hundred eleven million, sixty-six thousand, eight hundred twenty".