28058002109 has 2 divisors, whose sum is σ = 28058002110. Its totient is φ = 28058002108.

The previous prime is 28058002099. The next prime is 28058002123. The reversal of 28058002109 is 90120085082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27029004025 + 1028998084 = 164405^2 + 32078^2 .

It is a cyclic number.

It is not a de Polignac number, because 28058002109 - 2¹² = 28057998013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28058002129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14029001054 + 14029001055.

It is an arithmetic number, because the mean of its divisors is an integer number (14029001055).

Almost surely, 2^28058002109 is an apocalyptic number.

It is an amenable number.

28058002109 is a deficient number, since it is larger than the sum of its proper divisors (1).

28058002109 is an equidigital number, since it uses as much as digits as its factorization.

28058002109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 28058002109 in words is "twenty-eight billion, fifty-eight million, two thousand, one hundred nine".