20075641281643 has 2 divisors, whose sum is σ = 20075641281644. Its totient is φ = 20075641281642.

The previous prime is 20075641281587. The next prime is 20075641281673. The reversal of 20075641281643 is 34618214657002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20075641281643 - 2⁹ = 20075641281131 is a prime.

It is a super-3 number, since 3×20075641281643³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (20075641281673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10037820640821 + 10037820640822.

It is an arithmetic number, because the mean of its divisors is an integer number (10037820640822).

Almost surely, 2^{20075641281643} is an apocalyptic number.

20075641281643 is a deficient number, since it is larger than the sum of its proper divisors (1).

20075641281643 is an equidigital number, since it uses as much as digits as its factorization.

20075641281643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 20075641281643 in words is "twenty trillion, seventy-five billion, six hundred forty-one million, two hundred eighty-one thousand, six hundred forty-three".