28557985050605 has 16 divisors (see below), whose sum is σ = 36395063550144. Its totient is φ = 21437520656640.

The previous prime is 28557985050601. The next prime is 28557985050631. The reversal of 28557985050605 is 50605058975582.

It is not a de Polignac number, because 28557985050605 - 2² = 28557985050601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28557985050601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507488927 + ... + 507545196.

It is an arithmetic number, because the mean of its divisors is an integer number (2274691471884).

Almost surely, 2^{28557985050605} is an apocalyptic number.

It is an amenable number.

28557985050605 is a deficient number, since it is larger than the sum of its proper divisors (7837078499539).

28557985050605 is a wasteful number, since it uses less digits than its factorization.

28557985050605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015034476.

The product of its (nonzero) digits is 151200000, while the sum is 65.

The spelling of 28557985050605 in words is "twenty-eight trillion, five hundred fifty-seven billion, nine hundred eighty-five million, fifty thousand, six hundred five".