16442020305631 has 4 divisors (see below), whose sum is σ = 16444418157072. Its totient is φ = 16439622454192.

The previous prime is 16442020305619. The next prime is 16442020305647. The reversal of 16442020305631 is 13650302024461.

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-16442020305631 is a prime.

It is a super-3 number, since 3×16442020305631³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16442020305661) 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, 1198915435 + ... + 1198929148.

It is an arithmetic number, because the mean of its divisors is an integer number (4111104539268).

Almost surely, 2^{16442020305631} is an apocalyptic number.

16442020305631 is a deficient number, since it is larger than the sum of its proper divisors (2397851441).

16442020305631 is an equidigital number, since it uses as much as digits as its factorization.

16442020305631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397851440.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 16442020305631 in words is "sixteen trillion, four hundred forty-two billion, twenty million, three hundred five thousand, six hundred thirty-one".