28591585545 has 32 divisors (see below), whose sum is σ = 48899821824. Its totient is φ = 14230092800.

The previous prime is 28591585543. The next prime is 28591585549. The reversal of 28591585545 is 54558519582.

It is not a de Polignac number, because 28591585545 - 2¹ = 28591585543 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28591585543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 996516 + ... + 1024805.

It is an arithmetic number, because the mean of its divisors is an integer number (1528119432).

Almost surely, 2^28591585545 is an apocalyptic number.

It is an amenable number.

28591585545 is a deficient number, since it is larger than the sum of its proper divisors (20308236279).

28591585545 is a wasteful number, since it uses less digits than its factorization.

28591585545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021393.

The product of its digits is 14400000, while the sum is 57.

The spelling of 28591585545 in words is "twenty-eight billion, five hundred ninety-one million, five hundred eighty-five thousand, five hundred forty-five".