28161108213 has 16 divisors (see below), whose sum is σ = 44391895680. Its totient is φ = 15537162816.

The previous prime is 28161108203. The next prime is 28161108223. The reversal of 28161108213 is 31280116182.

It is an interprime number because it is at equal distance from previous prime (28161108203) and next prime (28161108223).

It is not a de Polignac number, because 28161108213 - 2⁴ = 28161108197 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23120170 + ... + 23121387.

It is an arithmetic number, because the mean of its divisors is an integer number (2774493480).

Almost surely, 2^28161108213 is an apocalyptic number.

It is an amenable number.

28161108213 is a deficient number, since it is larger than the sum of its proper divisors (16230787467).

28161108213 is a wasteful number, since it uses less digits than its factorization.

28161108213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46241596.

The product of its (nonzero) digits is 4608, while the sum is 33.

The spelling of 28161108213 in words is "twenty-eight billion, one hundred sixty-one million, one hundred eight thousand, two hundred thirteen".