16442020305643 has 16 divisors (see below), whose sum is σ = 17092977454080. Its totient is φ = 15806004984000.

The previous prime is 16442020305619. The next prime is 16442020305647. The reversal of 16442020305643 is 34650302024461.

It is a cyclic number.

It is not a de Polignac number, because 16442020305643 - 2²¹ = 16442018208491 is a prime.

It is a super-3 number, since 3×16442020305643³ (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 junction number, because it is equal to n+sod(n) for n = 16442020305596 and 16442020305605.

It is not an unprimeable number, because it can be changed into a prime (16442020305647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12383853 + ... + 13647118.

It is an arithmetic number, because the mean of its divisors is an integer number (1068311090880).

Almost surely, 2^{16442020305643} is an apocalyptic number.

16442020305643 is a deficient number, since it is larger than the sum of its proper divisors (650957148437).

16442020305643 is a wasteful number, since it uses less digits than its factorization.

16442020305643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26031258.

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 16442020305643 in words is "sixteen trillion, four hundred forty-two billion, twenty million, three hundred five thousand, six hundred forty-three".