20160444545 has 8 divisors (see below), whose sum is σ = 24193549800. Its totient is φ = 16127678080.

The previous prime is 20160444511. The next prime is 20160444569. The reversal of 20160444545 is 54544406102.

It can be written as a sum of positive squares in 4 ways, for example, as 1725322369 + 18435122176 = 41537^2 + 135776^2 .

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

It is not a de Polignac number, because 20160444545 - 2⁶ = 20160444481 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 72875 + ... + 213615.

It is an arithmetic number, because the mean of its divisors is an integer number (3024193725).

Almost surely, 2^20160444545 is an apocalyptic number.

It is an amenable number.

20160444545 is a deficient number, since it is larger than the sum of its proper divisors (4033105255).

20160444545 is a wasteful number, since it uses less digits than its factorization.

20160444545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169395.

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 20160444545 in words is "twenty billion, one hundred sixty million, four hundred forty-four thousand, five hundred forty-five".