20110309988 has 6 divisors (see below), whose sum is σ = 35193042486. Its totient is φ = 10055154992.

The previous prime is 20110309981. The next prime is 20110310029. The reversal of 20110309988 is 88990301102.

It can be written as a sum of positive squares in only one way, i.e., 19890025024 + 220284964 = 141032^2 + 14842^2 .

It is not an unprimeable number, because it can be changed into a prime (20110309981) 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 as a sum of consecutive naturals, namely, 2513788745 + ... + 2513788752.

It is an arithmetic number, because the mean of its divisors is an integer number (5865507081).

Almost surely, 2^20110309988 is an apocalyptic number.

It is an amenable number.

20110309988 is a deficient number, since it is larger than the sum of its proper divisors (15082732498).

20110309988 is a wasteful number, since it uses less digits than its factorization.

20110309988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027577501 (or 5027577499 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The spelling of 20110309988 in words is "twenty billion, one hundred ten million, three hundred nine thousand, nine hundred eighty-eight".