20080508911 has 4 divisors (see below), whose sum is σ = 20082640824. Its totient is φ = 20078377000.

The previous prime is 20080508893. The next prime is 20080508923. The reversal of 20080508911 is 11980508002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20080508911 - 2¹³ = 20080500719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20080508941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1051765 + ... + 1070686.

It is an arithmetic number, because the mean of its divisors is an integer number (5020660206).

Almost surely, 2^20080508911 is an apocalyptic number.

20080508911 is a deficient number, since it is larger than the sum of its proper divisors (2131913).

20080508911 is an equidigital number, since it uses as much as digits as its factorization.

20080508911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131912.

The product of its (nonzero) digits is 5760, while the sum is 34.

The spelling of 20080508911 in words is "twenty billion, eighty million, five hundred eight thousand, nine hundred eleven".