16205973145 has 8 divisors (see below), whose sum is σ = 20470703040. Its totient is φ = 12282421680.

The previous prime is 16205973143. The next prime is 16205973181. The reversal of 16205973145 is 54137950261.

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

It is not a de Polignac number, because 16205973145 - 2¹ = 16205973143 is a prime.

It is a super-2 number, since 2×16205973145² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16205973143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85294501 + ... + 85294690.

It is an arithmetic number, because the mean of its divisors is an integer number (2558837880).

Almost surely, 2^16205973145 is an apocalyptic number.

It is an amenable number.

16205973145 is a deficient number, since it is larger than the sum of its proper divisors (4264729895).

16205973145 is a wasteful number, since it uses less digits than its factorization.

16205973145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170589215.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 16205973145 in words is "sixteen billion, two hundred five million, nine hundred seventy-three thousand, one hundred forty-five".