28901111110111 has 2 divisors, whose sum is σ = 28901111110112. Its totient is φ = 28901111110110.

The previous prime is 28901111110037. The next prime is 28901111110117. The reversal of 28901111110111 is 11101111110982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28901111110111 - 2⁹ = 28901111109599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28901111110111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28901111110117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14450555555055 + 14450555555056.

It is an arithmetic number, because the mean of its divisors is an integer number (14450555555056).

Almost surely, 2^{28901111110111} is an apocalyptic number.

28901111110111 is a deficient number, since it is larger than the sum of its proper divisors (1).

28901111110111 is an equidigital number, since it uses as much as digits as its factorization.

28901111110111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 28.

The spelling of 28901111110111 in words is "twenty-eight trillion, nine hundred one billion, one hundred eleven million, one hundred ten thousand, one hundred eleven".