28557985050606 has 32 divisors (see below), whose sum is σ = 62309691381888. Its totient is φ = 8653745924640.

The previous prime is 28557985050601. The next prime is 28557985050631. The reversal of 28557985050606 is 60605058975582.

It is a Harshad number since it is a multiple of its sum of digits (66).

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, 1662685 + ... + 7738248.

It is an arithmetic number, because the mean of its divisors is an integer number (1947177855684).

Almost surely, 2^{28557985050606} is an apocalyptic number.

28557985050606 is an abundant number, since it is smaller than the sum of its proper divisors (33751706331282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28557985050606 is a wasteful number, since it uses less digits than its factorization.

28557985050606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9446976.

The product of its (nonzero) digits is 181440000, while the sum is 66.

The spelling of 28557985050606 in words is "twenty-eight trillion, five hundred fifty-seven billion, nine hundred eighty-five million, fifty thousand, six hundred six".