20084387680 has 48 divisors (see below), whose sum is σ = 54227849760. Its totient is φ = 6886075392.

The previous prime is 20084387651. The next prime is 20084387699. The reversal of 20084387680 is 8678348002.

It is a self number, because there is not a number n which added to its sum of digits gives 20084387680.

It is a congruent number.

It is an unprimeable number.

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, 8965125 + ... + 8967364.

It is an arithmetic number, because the mean of its divisors is an integer number (1129746870).

Almost surely, 2^20084387680 is an apocalyptic number.

20084387680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20084387680 is an abundant number, since it is smaller than the sum of its proper divisors (34143462080).

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

20084387680 is a wasteful number, since it uses less digits than its factorization.

20084387680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17932511 (or 17932503 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 20084387680 in words is "twenty billion, eighty-four million, three hundred eighty-seven thousand, six hundred eighty".