87766662469069 has 2 divisors, whose sum is σ = 87766662469070. Its totient is φ = 87766662469068.

The previous prime is 87766662469019. The next prime is 87766662469081. The reversal of 87766662469069 is 96096426666778.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56549467523844 + 31217194945225 = 7519938^2 + 5587235^2 .

It is a cyclic number.

It is not a de Polignac number, because 87766662469069 - 2¹⁵ = 87766662436301 is a prime.

It is a super-2 number, since 2×87766662469069² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87766662468983 and 87766662469001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87766662469019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43883331234534 + 43883331234535.

It is an arithmetic number, because the mean of its divisors is an integer number (43883331234535).

Almost surely, 2^{87766662469069} is an apocalyptic number.

It is an amenable number.

87766662469069 is a deficient number, since it is larger than the sum of its proper divisors (1).

87766662469069 is an equidigital number, since it uses as much as digits as its factorization.

87766662469069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11851370496, while the sum is 82.

The spelling of 87766662469069 in words is "eighty-seven trillion, seven hundred sixty-six billion, six hundred sixty-two million, four hundred sixty-nine thousand, sixty-nine".