442509866539 has 16 divisors (see below), whose sum is σ = 481518876160. Its totient is φ = 404211824640.

The previous prime is 442509866537. The next prime is 442509866569. The reversal of 442509866539 is 935668905244.

It is not a de Polignac number, because 442509866539 - 2¹ = 442509866537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442509866537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14914159 + ... + 14943799.

It is an arithmetic number, because the mean of its divisors is an integer number (30094929760).

Almost surely, 2^442509866539 is an apocalyptic number.

442509866539 is a deficient number, since it is larger than the sum of its proper divisors (39009009621).

442509866539 is a wasteful number, since it uses less digits than its factorization.

442509866539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41590.

The product of its (nonzero) digits is 55987200, while the sum is 61.

The spelling of 442509866539 in words is "four hundred forty-two billion, five hundred nine million, eight hundred sixty-six thousand, five hundred thirty-nine".