28549859541 has 32 divisors (see below), whose sum is σ = 45005807616. Its totient is φ = 15753528000.

The previous prime is 28549859539. The next prime is 28549859549. The reversal of 28549859541 is 14595894582.

It is not a de Polignac number, because 28549859541 - 2¹ = 28549859539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28549859549) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 252546 + ... + 347676.

It is an arithmetic number, because the mean of its divisors is an integer number (1406431488).

Almost surely, 2^28549859541 is an apocalyptic number.

28549859541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28549859541 is a deficient number, since it is larger than the sum of its proper divisors (16455948075).

28549859541 is a wasteful number, since it uses less digits than its factorization.

28549859541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95633.

The product of its digits is 20736000, while the sum is 60.

The spelling of 28549859541 in words is "twenty-eight billion, five hundred forty-nine million, eight hundred fifty-nine thousand, five hundred forty-one".