42433109989 has 2 divisors, whose sum is σ = 42433109990. Its totient is φ = 42433109988.

The previous prime is 42433109921. The next prime is 42433110011. The reversal of 42433109989 is 98990133424.

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., 42264369889 + 168740100 = 205583^2 + 12990^2 .

It is a cyclic number.

It is not a de Polignac number, because 42433109989 - 2⁷ = 42433109861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42433101989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21216554994 + 21216554995.

It is an arithmetic number, because the mean of its divisors is an integer number (21216554995).

Almost surely, 2^42433109989 is an apocalyptic number.

It is an amenable number.

42433109989 is a deficient number, since it is larger than the sum of its proper divisors (1).

42433109989 is an equidigital number, since it uses as much as digits as its factorization.

42433109989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 42433109989 in words is "forty-two billion, four hundred thirty-three million, one hundred nine thousand, nine hundred eighty-nine".