87766666662373 has 2 divisors, whose sum is σ = 87766666662374. Its totient is φ = 87766666662372.

The previous prime is 87766666662263. The next prime is 87766666662443. The reversal of 87766666662373 is 37326666666778.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50423604517764 + 37343062144609 = 7100958^2 + 6110897^2 .

It is a cyclic number.

It is not a de Polignac number, because 87766666662373 - 2¹⁷ = 87766666531301 is a prime.

It is a super-2 number, since 2×87766666662373² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87766666662293 and 87766666662302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87766666662473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43883333331186 + 43883333331187.

It is an arithmetic number, because the mean of its divisors is an integer number (43883333331187).

Almost surely, 2^{87766666662373} is an apocalyptic number.

It is an amenable number.

87766666662373 is a deficient number, since it is larger than the sum of its proper divisors (1).

87766666662373 is an equidigital number, since it uses as much as digits as its factorization.

87766666662373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13826598912, while the sum is 79.

The spelling of 87766666662373 in words is "eighty-seven trillion, seven hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-two thousand, three hundred seventy-three".