20367071005405 has 8 divisors (see below), whose sum is σ = 24487395929784. Its totient is φ = 16262382988800.

The previous prime is 20367071005331. The next prime is 20367071005417. The reversal of 20367071005405 is 50450017076302.

It can be written as a sum of positive squares in 4 ways, for example, as 139079022489 + 20227991982916 = 372933^2 + 4497554^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20367071005405 - 2¹⁹ = 20367070481117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3909224076 + ... + 3909229285.

It is an arithmetic number, because the mean of its divisors is an integer number (3060924491223).

Almost surely, 2^{20367071005405} is an apocalyptic number.

It is an amenable number.

20367071005405 is a deficient number, since it is larger than the sum of its proper divisors (4120324924379).

20367071005405 is an equidigital number, since it uses as much as digits as its factorization.

20367071005405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7818453887.

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 20367071005405 in words is "twenty trillion, three hundred sixty-seven billion, seventy-one million, five thousand, four hundred five".