16442446545 has 48 divisors (see below), whose sum is σ = 32683053312. Its totient is φ = 7490851200.

The previous prime is 16442446523. The next prime is 16442446549. The reversal of 16442446545 is 54564424461.

16442446545 is a `hidden beast` number, since 1 + 6 + 44 + 24 + 46 + 545 = 666.

16442446545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16442446545 - 2⁵ = 16442446513 is a prime.

It is a super-3 number, since 3×16442446545³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 16442446545.

It is not an unprimeable number, because it can be changed into a prime (16442446549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3220 + ... + 181370.

It is an arithmetic number, because the mean of its divisors is an integer number (680896944).

Almost surely, 2^16442446545 is an apocalyptic number.

16442446545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16442446545 is a deficient number, since it is larger than the sum of its proper divisors (16240606767).

16442446545 is a wasteful number, since it uses less digits than its factorization.

16442446545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178462 (or 178459 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 45.

The spelling of 16442446545 in words is "sixteen billion, four hundred forty-two million, four hundred forty-six thousand, five hundred forty-five".