20505887882200 has 72 divisors (see below), whose sum is σ = 55460056997700. Its totient is φ = 7030590127680.

The previous prime is 20505887882189. The next prime is 20505887882251. The reversal of 20505887882200 is 228878850502.

It is a happy number.

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 17 ways as a sum of consecutive naturals, for example, 1046208970 + ... + 1046228569.

Almost surely, 2^{20505887882200} is an apocalyptic number.

20505887882200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20505887882200 is an abundant number, since it is smaller than the sum of its proper divisors (34954169115500).

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

20505887882200 is a wasteful number, since it uses less digits than its factorization.

20505887882200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092437569 (or 2092437553 counting only the distinct ones).

The product of its (nonzero) digits is 5734400, while the sum is 55.

The spelling of 20505887882200 in words is "twenty trillion, five hundred five billion, eight hundred eighty-seven million, eight hundred eighty-two thousand, two hundred".