20844489933305 has 24 divisors (see below), whose sum is σ = 27136662415488. Its totient is φ = 15360745472768.

The previous prime is 20844489933269. The next prime is 20844489933313. The reversal of 20844489933305 is 50333998444802.

It is not a de Polignac number, because 20844489933305 - 2¹⁰ = 20844489932281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153392219 + ... + 153528048.

It is an arithmetic number, because the mean of its divisors is an integer number (1130694267312).

Almost surely, 2^{20844489933305} is an apocalyptic number.

It is an amenable number.

20844489933305 is a deficient number, since it is larger than the sum of its proper divisors (6292172482183).

20844489933305 is a wasteful number, since it uses less digits than its factorization.

20844489933305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306920353 (or 306920336 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 62.

The spelling of 20844489933305 in words is "twenty trillion, eight hundred forty-four billion, four hundred eighty-nine million, nine hundred thirty-three thousand, three hundred five".