28210136117 has 4 divisors (see below), whose sum is σ = 28220146080. Its totient is φ = 28200126156.

The previous prime is 28210136099. The next prime is 28210136147. The reversal of 28210136117 is 71163101282.

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 28210136117 - 2¹⁴ = 28210119733 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 (28210136147) 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, 5000753 + ... + 5006390.

It is an arithmetic number, because the mean of its divisors is an integer number (7055036520).

Almost surely, 2^28210136117 is an apocalyptic number.

It is an amenable number.

28210136117 is a deficient number, since it is larger than the sum of its proper divisors (10009963).

28210136117 is a wasteful number, since it uses less digits than its factorization.

28210136117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10009962.

The product of its (nonzero) digits is 4032, while the sum is 32.

Adding to 28210136117 its reverse (71163101282), we get a palindrome (99373237399).

The spelling of 28210136117 in words is "twenty-eight billion, two hundred ten million, one hundred thirty-six thousand, one hundred seventeen".