42636520159 has 2 divisors, whose sum is σ = 42636520160. Its totient is φ = 42636520158.

The previous prime is 42636520153. The next prime is 42636520177. The reversal of 42636520159 is 95102563624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42636520159 - 2²³ = 42628131551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42636520153) 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, 21318260079 + 21318260080.

It is an arithmetic number, because the mean of its divisors is an integer number (21318260080).

Almost surely, 2^42636520159 is an apocalyptic number.

42636520159 is a deficient number, since it is larger than the sum of its proper divisors (1).

42636520159 is an equidigital number, since it uses as much as digits as its factorization.

42636520159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 42636520159 in words is "forty-two billion, six hundred thirty-six million, five hundred twenty thousand, one hundred fifty-nine".