87228074189 has 2 divisors, whose sum is σ = 87228074190. Its totient is φ = 87228074188.

The previous prime is 87228074147. The next prime is 87228074207. The reversal of 87228074189 is 98147082278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87226896964 + 1177225 = 295342^2 + 1085^2 .

It is a cyclic number.

It is not a de Polignac number, because 87228074189 - 2¹² = 87228070093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87228079189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43614037094 + 43614037095.

It is an arithmetic number, because the mean of its divisors is an integer number (43614037095).

Almost surely, 2^87228074189 is an apocalyptic number.

It is an amenable number.

87228074189 is a deficient number, since it is larger than the sum of its proper divisors (1).

87228074189 is an equidigital number, since it uses as much as digits as its factorization.

87228074189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3612672, while the sum is 56.

The spelling of 87228074189 in words is "eighty-seven billion, two hundred twenty-eight million, seventy-four thousand, one hundred eighty-nine".