442511495999 has 4 divisors (see below), whose sum is σ = 442724141760. Its totient is φ = 442298850240.

The previous prime is 442511495897. The next prime is 442511496023. The reversal of 442511495999 is 999594115244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442511495999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442511491999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106319759 + ... + 106323920.

It is an arithmetic number, because the mean of its divisors is an integer number (110681035440).

Almost surely, 2^442511495999 is an apocalyptic number.

442511495999 is a deficient number, since it is larger than the sum of its proper divisors (212645761).

442511495999 is a wasteful number, since it uses less digits than its factorization.

442511495999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212645760.

The product of its digits is 20995200, while the sum is 62.

The spelling of 442511495999 in words is "four hundred forty-two billion, five hundred eleven million, four hundred ninety-five thousand, nine hundred ninety-nine".