20043011489 has 2 divisors, whose sum is σ = 20043011490. Its totient is φ = 20043011488.

The previous prime is 20043011423. The next prime is 20043011507. The reversal of 20043011489 is 98411034002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11839180864 + 8203830625 = 108808^2 + 90575^2 .

It is a cyclic number.

It is not a de Polignac number, because 20043011489 - 2¹⁶ = 20042945953 is a prime.

It is not a weakly prime, because it can be changed into another prime (20043011419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021505744 + 10021505745.

It is an arithmetic number, because the mean of its divisors is an integer number (10021505745).

Almost surely, 2^20043011489 is an apocalyptic number.

It is an amenable number.

20043011489 is a deficient number, since it is larger than the sum of its proper divisors (1).

20043011489 is an equidigital number, since it uses as much as digits as its factorization.

20043011489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 20043011489 in words is "twenty billion, forty-three million, eleven thousand, four hundred eighty-nine".