20055303511 has 4 divisors (see below), whose sum is σ = 20095495000. Its totient is φ = 20015112024.

The previous prime is 20055303503. The next prime is 20055303517. The reversal of 20055303511 is 11530355002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20055303511 - 2³ = 20055303503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20055303517) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 20094996 + ... + 20095993.

It is an arithmetic number, because the mean of its divisors is an integer number (5023873750).

Almost surely, 2^20055303511 is an apocalyptic number.

20055303511 is a deficient number, since it is larger than the sum of its proper divisors (40191489).

20055303511 is an equidigital number, since it uses as much as digits as its factorization.

20055303511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40191488.

The product of its (nonzero) digits is 2250, while the sum is 25.

Adding to 20055303511 its reverse (11530355002), we get a palindrome (31585658513).

The spelling of 20055303511 in words is "twenty billion, fifty-five million, three hundred three thousand, five hundred eleven".