42511643189 has 2 divisors, whose sum is σ = 42511643190. Its totient is φ = 42511643188.

The previous prime is 42511643183. The next prime is 42511643197. The reversal of 42511643189 is 98134611524.

42511643189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41801847025 + 709796164 = 204455^2 + 26642^2 .

It is a cyclic number.

It is not a de Polignac number, because 42511643189 - 2⁸ = 42511642933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42511643183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21255821594 + 21255821595.

It is an arithmetic number, because the mean of its divisors is an integer number (21255821595).

Almost surely, 2^42511643189 is an apocalyptic number.

It is an amenable number.

42511643189 is a deficient number, since it is larger than the sum of its proper divisors (1).

42511643189 is an equidigital number, since it uses as much as digits as its factorization.

42511643189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 44.

The spelling of 42511643189 in words is "forty-two billion, five hundred eleven million, six hundred forty-three thousand, one hundred eighty-nine".