28549260101 has 4 divisors (see below), whose sum is σ = 28587685152. Its totient is φ = 28510835052.

The previous prime is 28549260079. The next prime is 28549260107. The reversal of 28549260101 is 10106294582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28549260101 - 2³⁰ = 27475518277 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 (28549260107) 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 3 ways as a sum of consecutive naturals, for example, 19211411 + ... + 19212896.

It is an arithmetic number, because the mean of its divisors is an integer number (7146921288).

Almost surely, 2^28549260101 is an apocalyptic number.

It is an amenable number.

28549260101 is a deficient number, since it is larger than the sum of its proper divisors (38425051).

28549260101 is an equidigital number, since it uses as much as digits as its factorization.

28549260101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38425050.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 28549260101 in words is "twenty-eight billion, five hundred forty-nine million, two hundred sixty thousand, one hundred one".