16442663450745 has 32 divisors (see below), whose sum is σ = 30157420262400. Its totient is φ = 7493937232320.

The previous prime is 16442663450651. The next prime is 16442663450761. The reversal of 16442663450745 is 54705436624461.

It is not a de Polignac number, because 16442663450745 - 2⁸ = 16442663450489 is a prime.

It is a super-3 number, since 3×16442663450745³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236516295 + ... + 236585804.

It is an arithmetic number, because the mean of its divisors is an integer number (942419383200).

Almost surely, 2^{16442663450745} is an apocalyptic number.

16442663450745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16442663450745 is a deficient number, since it is larger than the sum of its proper divisors (13714756811655).

16442663450745 is a wasteful number, since it uses less digits than its factorization.

16442663450745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473102445.

The product of its (nonzero) digits is 58060800, while the sum is 57.

The spelling of 16442663450745 in words is "sixteen trillion, four hundred forty-two billion, six hundred sixty-three million, four hundred fifty thousand, seven hundred forty-five".