20784416090 has 16 divisors (see below), whose sum is σ = 37428348672. Its totient is φ = 8310122064.

The previous prime is 20784416089. The next prime is 20784416099. The reversal of 20784416090 is 9061448702.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20784416099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431534 + ... + 477273.

It is an arithmetic number, because the mean of its divisors is an integer number (2339271792).

Almost surely, 2^20784416090 is an apocalyptic number.

20784416090 is a deficient number, since it is larger than the sum of its proper divisors (16643932582).

20784416090 is a wasteful number, since it uses less digits than its factorization.

20784416090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911101.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 20784416090 in words is "twenty billion, seven hundred eighty-four million, four hundred sixteen thousand, ninety".