28160606645 has 8 divisors (see below), whose sum is σ = 33879601080. Its totient is φ = 22470569920.

The previous prime is 28160606569. The next prime is 28160606671. The reversal of 28160606645 is 54660606182.

It can be written as a sum of positive squares in 4 ways, for example, as 410710756 + 27749895889 = 20266^2 + 166583^2 .

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

It is not a de Polignac number, because 28160606645 - 2¹² = 28160602549 is a prime.

It is a super-2 number, since 2×28160606645² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28160606596 and 28160606605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7237286 + ... + 7241175.

It is an arithmetic number, because the mean of its divisors is an integer number (4234950135).

Almost surely, 2^28160606645 is an apocalyptic number.

It is an amenable number.

28160606645 is a deficient number, since it is larger than the sum of its proper divisors (5718994435).

28160606645 is a wasteful number, since it uses less digits than its factorization.

28160606645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14478855.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 28160606645 in words is "twenty-eight billion, one hundred sixty million, six hundred six thousand, six hundred forty-five".