20011055305 has 16 divisors (see below), whose sum is σ = 24234226704. Its totient is φ = 15861637120.

The previous prime is 20011055299. The next prime is 20011055347. The reversal of 20011055305 is 50355011002.

It can be written as a sum of positive squares in 8 ways, for example, as 10980734521 + 9030320784 = 104789^2 + 95028^2 .

It is not a de Polignac number, because 20011055305 - 2⁷ = 20011055177 is a prime.

It is a Duffinian 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, 2548185 + ... + 2556025.

It is an arithmetic number, because the mean of its divisors is an integer number (1514639169).

Almost surely, 2^20011055305 is an apocalyptic number.

It is an amenable number.

20011055305 is a deficient number, since it is larger than the sum of its proper divisors (4223171399).

20011055305 is a wasteful number, since it uses less digits than its factorization.

20011055305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12476.

The product of its (nonzero) digits is 750, while the sum is 22.

Adding to 20011055305 its reverse (50355011002), we get a palindrome (70366066307).

The spelling of 20011055305 in words is "twenty billion, eleven million, fifty-five thousand, three hundred five".