28187027711 has 2 divisors, whose sum is σ = 28187027712. Its totient is φ = 28187027710.

The previous prime is 28187027677. The next prime is 28187027773. The reversal of 28187027711 is 11772078182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28187027711 - 2²² = 28182833407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28187027411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14093513855 + 14093513856.

It is an arithmetic number, because the mean of its divisors is an integer number (14093513856).

Almost surely, 2^28187027711 is an apocalyptic number.

28187027711 is a deficient number, since it is larger than the sum of its proper divisors (1).

28187027711 is an equidigital number, since it uses as much as digits as its factorization.

28187027711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87808, while the sum is 44.

The spelling of 28187027711 in words is "twenty-eight billion, one hundred eighty-seven million, twenty-seven thousand, seven hundred eleven".