20136423042005 has 8 divisors (see below), whose sum is σ = 24398306754432. Its totient is φ = 15952739030928.

The previous prime is 20136423041927. The next prime is 20136423042017. The reversal of 20136423042005 is 50024032463102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20136423042005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19549924769 + ... + 19549925798.

It is an arithmetic number, because the mean of its divisors is an integer number (3049788344304).

Almost surely, 2^{20136423042005} is an apocalyptic number.

It is an amenable number.

20136423042005 is a deficient number, since it is larger than the sum of its proper divisors (4261883712427).

20136423042005 is a wasteful number, since it uses less digits than its factorization.

20136423042005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39099850675.

The product of its (nonzero) digits is 34560, while the sum is 32.

The spelling of 20136423042005 in words is "twenty trillion, one hundred thirty-six billion, four hundred twenty-three million, forty-two thousand, five".