42440616259 has 2 divisors, whose sum is σ = 42440616260. Its totient is φ = 42440616258.

The previous prime is 42440616233. The next prime is 42440616343. The reversal of 42440616259 is 95261604424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42440616259 - 2¹⁷ = 42440485187 is a prime.

It is not a weakly prime, because it can be changed into another prime (42440610259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21220308129 + 21220308130.

It is an arithmetic number, because the mean of its divisors is an integer number (21220308130).

Almost surely, 2^42440616259 is an apocalyptic number.

42440616259 is a deficient number, since it is larger than the sum of its proper divisors (1).

42440616259 is an equidigital number, since it uses as much as digits as its factorization.

42440616259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 42440616259 in words is "forty-two billion, four hundred forty million, six hundred sixteen thousand, two hundred fifty-nine".