20035305505 has 8 divisors (see below), whose sum is σ = 24047269992. Its totient is φ = 16024975488.

The previous prime is 20035305469. The next prime is 20035305517. The reversal of 20035305505 is 50550353002.

It can be written as a sum of positive squares in 4 ways, for example, as 5419462689 + 14615842816 = 73617^2 + 120896^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20035305505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 381484 + ... + 430813.

It is an arithmetic number, because the mean of its divisors is an integer number (3005908749).

Almost surely, 2^20035305505 is an apocalyptic number.

It is an amenable number.

20035305505 is a deficient number, since it is larger than the sum of its proper divisors (4011964487).

20035305505 is an equidigital number, since it uses as much as digits as its factorization.

20035305505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817235.

The product of its (nonzero) digits is 11250, while the sum is 28.

Adding to 20035305505 its reverse (50550353002), we get a palindrome (70585658507).

The spelling of 20035305505 in words is "twenty billion, thirty-five million, three hundred five thousand, five hundred five".