87079985269 has 2 divisors, whose sum is σ = 87079985270. Its totient is φ = 87079985268.

The previous prime is 87079985257. The next prime is 87079985297. The reversal of 87079985269 is 96258997078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85943958244 + 1136027025 = 293162^2 + 33705^2 .

It is a cyclic number.

It is not a de Polignac number, because 87079985269 - 2⁹ = 87079984757 is a prime.

It is a super-2 number, since 2×87079985269² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87079985198 and 87079985207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87079985569) 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, 43539992634 + 43539992635.

It is an arithmetic number, because the mean of its divisors is an integer number (43539992635).

Almost surely, 2^87079985269 is an apocalyptic number.

It is an amenable number.

87079985269 is a deficient number, since it is larger than the sum of its proper divisors (1).

87079985269 is an equidigital number, since it uses as much as digits as its factorization.

87079985269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 137168640, while the sum is 70.

The spelling of 87079985269 in words is "eighty-seven billion, seventy-nine million, nine hundred eighty-five thousand, two hundred sixty-nine".