28161108207 has 24 divisors (see below), whose sum is σ = 42453007584. Its totient is φ = 17954728704.

The previous prime is 28161108203. The next prime is 28161108223. The reversal of 28161108207 is 70280116182.

It is not a de Polignac number, because 28161108207 - 2² = 28161108203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28161108203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2373963 + ... + 2385795.

It is an arithmetic number, because the mean of its divisors is an integer number (1768875316).

Almost surely, 2^28161108207 is an apocalyptic number.

28161108207 is a deficient number, since it is larger than the sum of its proper divisors (14291899377).

28161108207 is a wasteful number, since it uses less digits than its factorization.

28161108207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23359 (or 23356 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The spelling of 28161108207 in words is "twenty-eight billion, one hundred sixty-one million, one hundred eight thousand, two hundred seven".