28033856101 has 4 divisors (see below), whose sum is σ = 28212415852. Its totient is φ = 27855296352.

The previous prime is 28033856099. The next prime is 28033856113. The reversal of 28033856101 is 10165833082.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10485555201 + 17548300900 = 102399^2 + 132470^2 .

It is a cyclic number.

It is not a de Polignac number, because 28033856101 - 2¹ = 28033856099 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 (28033856131) 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, 89279640 + ... + 89279953.

It is an arithmetic number, because the mean of its divisors is an integer number (7053103963).

Almost surely, 2^28033856101 is an apocalyptic number.

It is an amenable number.

28033856101 is a deficient number, since it is larger than the sum of its proper divisors (178559751).

28033856101 is a wasteful number, since it uses less digits than its factorization.

28033856101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178559750.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 28033856101 in words is "twenty-eight billion, thirty-three million, eight hundred fifty-six thousand, one hundred one".