201443421983 has 2 divisors, whose sum is σ = 201443421984. Its totient is φ = 201443421982.

The previous prime is 201443421923. The next prime is 201443422009. The reversal of 201443421983 is 389124344102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201443421983 - 2¹⁸ = 201443159839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201443421983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201443421923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100721710991 + 100721710992.

It is an arithmetic number, because the mean of its divisors is an integer number (100721710992).

Almost surely, 2^201443421983 is an apocalyptic number.

201443421983 is a deficient number, since it is larger than the sum of its proper divisors (1).

201443421983 is an equidigital number, since it uses as much as digits as its factorization.

201443421983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 201443421983 in words is "two hundred one billion, four hundred forty-three million, four hundred twenty-one thousand, nine hundred eighty-three".