87389756485169 has 2 divisors, whose sum is σ = 87389756485170. Its totient is φ = 87389756485168.

The previous prime is 87389756485159. The next prime is 87389756485247. The reversal of 87389756485169 is 96158465798378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53930473125169 + 33459283360000 = 7343737^2 + 5784400^2 .

It is a cyclic number.

It is not a de Polignac number, because 87389756485169 - 2¹² = 87389756481073 is a prime.

It is a super-2 number, since 2×87389756485169² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87389756485159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43694878242584 + 43694878242585.

It is an arithmetic number, because the mean of its divisors is an integer number (43694878242585).

Almost surely, 2^{87389756485169} is an apocalyptic number.

It is an amenable number.

87389756485169 is a deficient number, since it is larger than the sum of its proper divisors (1).

87389756485169 is an equidigital number, since it uses as much as digits as its factorization.

87389756485169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21946982400, while the sum is 86.

The spelling of 87389756485169 in words is "eighty-seven trillion, three hundred eighty-nine billion, seven hundred fifty-six million, four hundred eighty-five thousand, one hundred sixty-nine".