20984033590 has 32 divisors (see below), whose sum is σ = 40851379296. Its totient is φ = 7714686720.

The previous prime is 20984033569. The next prime is 20984033621. The reversal of 20984033590 is 9533048902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316096 + ... + 376675.

It is an arithmetic number, because the mean of its divisors is an integer number (1276605603).

Almost surely, 2^20984033590 is an apocalyptic number.

20984033590 is a deficient number, since it is larger than the sum of its proper divisors (19867345706).

20984033590 is a wasteful number, since it uses less digits than its factorization.

20984033590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693024.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 20984033590 in words is "twenty billion, nine hundred eighty-four million, thirty-three thousand, five hundred ninety".