28541199959 has 4 divisors (see below), whose sum is σ = 28557785760. Its totient is φ = 28524614160.

The previous prime is 28541199949. The next prime is 28541199977. The reversal of 28541199959 is 95999114582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28541199959 - 2⁴ = 28541199943 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 (28541199949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8290319 + ... + 8293760.

It is an arithmetic number, because the mean of its divisors is an integer number (7139446440).

Almost surely, 2^28541199959 is an apocalyptic number.

28541199959 is a deficient number, since it is larger than the sum of its proper divisors (16585801).

28541199959 is a wasteful number, since it uses less digits than its factorization.

28541199959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16585800.

The product of its digits is 10497600, while the sum is 62.

The spelling of 28541199959 in words is "twenty-eight billion, five hundred forty-one million, one hundred ninety-nine thousand, nine hundred fifty-nine".