20117023661443 has 2 divisors, whose sum is σ = 20117023661444. Its totient is φ = 20117023661442.

The previous prime is 20117023661431. The next prime is 20117023661447. The reversal of 20117023661443 is 34416632071102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20117023661443 - 2⁹ = 20117023660931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20117023661396 and 20117023661405.

It is not a weakly prime, because it can be changed into another prime (20117023661447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10058511830721 + 10058511830722.

It is an arithmetic number, because the mean of its divisors is an integer number (10058511830722).

Almost surely, 2^{20117023661443} is an apocalyptic number.

20117023661443 is a deficient number, since it is larger than the sum of its proper divisors (1).

20117023661443 is an equidigital number, since it uses as much as digits as its factorization.

20117023661443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 20117023661443 in words is "twenty trillion, one hundred seventeen billion, twenty-three million, six hundred sixty-one thousand, four hundred forty-three".