28107543145 has 24 divisors (see below), whose sum is σ = 37301660928. Its totient is φ = 20316368160.

The previous prime is 28107543091. The next prime is 28107543161. The reversal of 28107543145 is 54134570182.

It is not a de Polignac number, because 28107543145 - 2¹¹ = 28107541097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28107543098 and 28107543107.

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 23 ways as a sum of consecutive naturals, for example, 43897 + ... + 241126.

It is an arithmetic number, because the mean of its divisors is an integer number (1554235872).

Almost surely, 2^28107543145 is an apocalyptic number.

It is an amenable number.

28107543145 is a deficient number, since it is larger than the sum of its proper divisors (9194117783).

28107543145 is a wasteful number, since it uses less digits than its factorization.

28107543145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285213 (or 285202 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 28107543145 in words is "twenty-eight billion, one hundred seven million, five hundred forty-three thousand, one hundred forty-five".