20046660005 has 4 divisors (see below), whose sum is σ = 24055992012. Its totient is φ = 16037328000.

The previous prime is 20046659959. The next prime is 20046660047. The reversal of 20046660005 is 50006664002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8192241121 + 11854418884 = 90511^2 + 108878^2 .

It is not a de Polignac number, because 20046660005 - 2²² = 20042465701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20046660005.

It is a congruent number.

It is an unprimeable number.

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, 2004665996 + ... + 2004666005.

It is an arithmetic number, because the mean of its divisors is an integer number (6013998003).

Almost surely, 2^20046660005 is an apocalyptic number.

It is an amenable number.

20046660005 is a deficient number, since it is larger than the sum of its proper divisors (4009332007).

20046660005 is an equidigital number, since it uses as much as digits as its factorization.

20046660005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4009332006.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 20046660005 in words is "twenty billion, forty-six million, six hundred sixty thousand, five".