201440016889 has 2 divisors, whose sum is σ = 201440016890. Its totient is φ = 201440016888.

The previous prime is 201440016859. The next prime is 201440016923. The reversal of 201440016889 is 988610044102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139421585664 + 62018431225 = 373392^2 + 249035^2 .

It is a cyclic number.

It is not a de Polignac number, because 201440016889 - 2⁷ = 201440016761 is a prime.

It is not a weakly prime, because it can be changed into another prime (201440016859) 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, 100720008444 + 100720008445.

It is an arithmetic number, because the mean of its divisors is an integer number (100720008445).

Almost surely, 2^201440016889 is an apocalyptic number.

It is an amenable number.

201440016889 is a deficient number, since it is larger than the sum of its proper divisors (1).

201440016889 is an equidigital number, since it uses as much as digits as its factorization.

201440016889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 43.

The spelling of 201440016889 in words is "two hundred one billion, four hundred forty million, sixteen thousand, eight hundred eighty-nine".