20005677811 has 12 divisors (see below), whose sum is σ = 24074392320. Its totient is φ = 16556421840.

The previous prime is 20005677799. The next prime is 20005677827. The reversal of 20005677811 is 11877650002.

It is not a de Polignac number, because 20005677811 - 2⁷ = 20005677683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20005671811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7037875 + ... + 7040716.

It is an arithmetic number, because the mean of its divisors is an integer number (2006199360).

Almost surely, 2^20005677811 is an apocalyptic number.

20005677811 is a deficient number, since it is larger than the sum of its proper divisors (4068714509).

20005677811 is a wasteful number, since it uses less digits than its factorization.

20005677811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14078634 (or 14078627 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 37.

The spelling of 20005677811 in words is "twenty billion, five million, six hundred seventy-seven thousand, eight hundred eleven".