20011053013 has 6 divisors (see below), whose sum is σ = 23278163766. Its totient is φ = 17152331112.

The previous prime is 20011052969. The next prime is 20011053037. The reversal of 20011053013 is 31035011002.

It can be written as a sum of positive squares in only one way, i.e., 13382325124 + 6628727889 = 115682^2 + 81417^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20011053013 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 (20011053043) 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 5 ways as a sum of consecutive naturals, for example, 204194370 + ... + 204194467.

It is an arithmetic number, because the mean of its divisors is an integer number (3879693961).

Almost surely, 2^20011053013 is an apocalyptic number.

It is an amenable number.

20011053013 is a deficient number, since it is larger than the sum of its proper divisors (3267110753).

20011053013 is an equidigital number, since it uses as much as digits as its factorization.

20011053013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408388851 (or 408388844 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

Adding to 20011053013 its reverse (31035011002), we get a palindrome (51046064015).

The spelling of 20011053013 in words is "twenty billion, eleven million, fifty-three thousand, thirteen".