20832166811 has 4 divisors (see below), whose sum is σ = 21504172224. Its totient is φ = 20160161400.

The previous prime is 20832166793. The next prime is 20832166813. The reversal of 20832166811 is 11866123802.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20832166811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20832166813) 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 3 ways as a sum of consecutive naturals, for example, 336002660 + ... + 336002721.

It is an arithmetic number, because the mean of its divisors is an integer number (5376043056).

Almost surely, 2^20832166811 is an apocalyptic number.

20832166811 is a deficient number, since it is larger than the sum of its proper divisors (672005413).

20832166811 is an equidigital number, since it uses as much as digits as its factorization.

20832166811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672005412.

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 20832166811 in words is "twenty billion, eight hundred thirty-two million, one hundred sixty-six thousand, eight hundred eleven".