16442663474531 has 8 divisors (see below), whose sum is σ = 18795708578304. Its totient is φ = 14090641665480.

The previous prime is 16442663474521. The next prime is 16442663474543. The reversal of 16442663474531 is 13547436624461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16442663474531 - 2¹⁴ = 16442663458147 is a prime.

It is a super-3 number, since 3×16442663474531³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (16442663474521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255789245 + ... + 255853518.

It is an arithmetic number, because the mean of its divisors is an integer number (2349463572288).

Almost surely, 2^{16442663474531} is an apocalyptic number.

16442663474531 is a deficient number, since it is larger than the sum of its proper divisors (2353045103773).

16442663474531 is an equidigital number, since it uses as much as digits as its factorization.

16442663474531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511647361.

The product of its digits is 34836480, while the sum is 56.

The spelling of 16442663474531 in words is "sixteen trillion, four hundred forty-two billion, six hundred sixty-three million, four hundred seventy-four thousand, five hundred thirty-one".