20502535505 has 8 divisors (see below), whose sum is σ = 24604022592. Its totient is φ = 16401375088.

The previous prime is 20502535489. The next prime is 20502535511. The reversal of 20502535505 is 50553520502.

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

It is a cyclic number.

It is not a de Polignac number, because 20502535505 - 2⁴ = 20502535489 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88742 + ... + 221088.

It is an arithmetic number, because the mean of its divisors is an integer number (3075502824).

Almost surely, 2^20502535505 is an apocalyptic number.

It is an amenable number.

20502535505 is a deficient number, since it is larger than the sum of its proper divisors (4101487087).

20502535505 is a wasteful number, since it uses less digits than its factorization.

20502535505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163335.

The product of its (nonzero) digits is 37500, while the sum is 32.

The spelling of 20502535505 in words is "twenty billion, five hundred two million, five hundred thirty-five thousand, five hundred five".