28290921103 has 2 divisors, whose sum is σ = 28290921104. Its totient is φ = 28290921102.

The previous prime is 28290921101. The next prime is 28290921107. The reversal of 28290921103 is 30112909282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28290921103 - 2¹ = 28290921101 is a prime.

Together with 28290921101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28290921101) 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 as a sum of consecutive naturals, namely, 14145460551 + 14145460552.

It is an arithmetic number, because the mean of its divisors is an integer number (14145460552).

Almost surely, 2^28290921103 is an apocalyptic number.

28290921103 is a deficient number, since it is larger than the sum of its proper divisors (1).

28290921103 is an equidigital number, since it uses as much as digits as its factorization.

28290921103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The spelling of 28290921103 in words is "twenty-eight billion, two hundred ninety million, nine hundred twenty-one thousand, one hundred three".