20088811605 has 16 divisors (see below), whose sum is σ = 32170051584. Its totient is φ = 10704715200.

The previous prime is 20088811601. The next prime is 20088811607. The reversal of 20088811605 is 50611888002.

It is not a de Polignac number, because 20088811605 - 2² = 20088811601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20088811601) 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 15 ways as a sum of consecutive naturals, for example, 564514 + ... + 599043.

It is an arithmetic number, because the mean of its divisors is an integer number (2010628224).

Almost surely, 2^20088811605 is an apocalyptic number.

It is an amenable number.

20088811605 is a deficient number, since it is larger than the sum of its proper divisors (12081239979).

20088811605 is a wasteful number, since it uses less digits than its factorization.

20088811605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164716.

The product of its (nonzero) digits is 30720, while the sum is 39.

The spelling of 20088811605 in words is "twenty billion, eighty-eight million, eight hundred eleven thousand, six hundred five".