20014402241891 has 2 divisors, whose sum is σ = 20014402241892. Its totient is φ = 20014402241890.

The previous prime is 20014402241857. The next prime is 20014402241941. The reversal of 20014402241891 is 19814220441002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20014402241891 is a prime.

It is a super-2 number, since 2×20014402241891² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20014402241831) 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, 10007201120945 + 10007201120946.

It is an arithmetic number, because the mean of its divisors is an integer number (10007201120946).

Almost surely, 2^{20014402241891} is an apocalyptic number.

20014402241891 is a deficient number, since it is larger than the sum of its proper divisors (1).

20014402241891 is an equidigital number, since it uses as much as digits as its factorization.

20014402241891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 38.

Adding to 20014402241891 its reverse (19814220441002), we get a palindrome (39828622682893).

The spelling of 20014402241891 in words is "twenty trillion, fourteen billion, four hundred two million, two hundred forty-one thousand, eight hundred ninety-one".