20456005041663 has 4 divisors (see below), whose sum is σ = 27274673388888. Its totient is φ = 13637336694440.

The previous prime is 20456005041631. The next prime is 20456005041697. The reversal of 20456005041663 is 36614050065402.

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

It is a cyclic number.

It is not a de Polignac number, because 20456005041663 - 2⁵ = 20456005041631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20456005041623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3409334173608 + ... + 3409334173613.

It is an arithmetic number, because the mean of its divisors is an integer number (6818668347222).

Almost surely, 2^{20456005041663} is an apocalyptic number.

20456005041663 is a deficient number, since it is larger than the sum of its proper divisors (6818668347225).

20456005041663 is an equidigital number, since it uses as much as digits as its factorization.

20456005041663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6818668347224.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 20456005041663 in words is "twenty trillion, four hundred fifty-six billion, five million, forty-one thousand, six hundred sixty-three".