87228079189 has 2 divisors, whose sum is σ = 87228079190. Its totient is φ = 87228079188.

The previous prime is 87228079187. The next prime is 87228079199. The reversal of 87228079189 is 98197082278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84245062500 + 2983016689 = 290250^2 + 54617^2 .

It is a cyclic number.

It is not a de Polignac number, because 87228079189 - 2¹ = 87228079187 is a prime.

Together with 87228079187, 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 (87228079181) 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, 43614039594 + 43614039595.

It is an arithmetic number, because the mean of its divisors is an integer number (43614039595).

Almost surely, 2^87228079189 is an apocalyptic number.

It is an amenable number.

87228079189 is a deficient number, since it is larger than the sum of its proper divisors (1).

87228079189 is an equidigital number, since it uses as much as digits as its factorization.

87228079189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8128512, while the sum is 61.

The spelling of 87228079189 in words is "eighty-seven billion, two hundred twenty-eight million, seventy-nine thousand, one hundred eighty-nine".