20420035011 has 16 divisors (see below), whose sum is σ = 30666316320. Its totient is φ = 13426871040.

The previous prime is 20420034997. The next prime is 20420035019. The reversal of 20420035011 is 11053002402.

It is not a de Polignac number, because 20420035011 - 2⁷ = 20420034883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20420035019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5178150 + ... + 5182091.

It is an arithmetic number, because the mean of its divisors is an integer number (1916644770).

Almost surely, 2^20420035011 is an apocalyptic number.

20420035011 is a deficient number, since it is larger than the sum of its proper divisors (10246281309).

20420035011 is a wasteful number, since it uses less digits than its factorization.

20420035011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10360323 (or 10360317 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 20420035011 its reverse (11053002402), we get a palindrome (31473037413).

The spelling of 20420035011 in words is "twenty billion, four hundred twenty million, thirty-five thousand, eleven".