16042446065 has 12 divisors (see below), whose sum is σ = 20124326964. Its totient is φ = 12275956704.

The previous prime is 16042446053. The next prime is 16042446103. The reversal of 16042446065 is 56064424061.

It can be written as a sum of positive squares in 2 ways, for example, as 8788687504 + 7253758561 = 93748^2 + 85169^2 .

It is not a de Polignac number, because 16042446065 - 2²⁴ = 16025668849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3029954 + ... + 3035243.

It is an arithmetic number, because the mean of its divisors is an integer number (1677027247).

Almost surely, 2^16042446065 is an apocalyptic number.

It is an amenable number.

16042446065 is a deficient number, since it is larger than the sum of its proper divisors (4081880899).

16042446065 is an equidigital number, since it uses as much as digits as its factorization.

16042446065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6065248 (or 6065225 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 16042446065 in words is "sixteen billion, forty-two million, four hundred forty-six thousand, sixty-five".