87678375526589 has 2 divisors, whose sum is σ = 87678375526590. Its totient is φ = 87678375526588.

The previous prime is 87678375526543. The next prime is 87678375526603. The reversal of 87678375526589 is 98562557387678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52860315660100 + 34818059866489 = 7270510^2 + 5900683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87678375526589 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87678375526589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87678375523589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43839187763294 + 43839187763295.

It is an arithmetic number, because the mean of its divisors is an integer number (43839187763295).

Almost surely, 2^{87678375526589} is an apocalyptic number.

It is an amenable number.

87678375526589 is a deficient number, since it is larger than the sum of its proper divisors (1).

87678375526589 is an equidigital number, since it uses as much as digits as its factorization.

87678375526589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42674688000, while the sum is 86.

The spelling of 87678375526589 in words is "eighty-seven trillion, six hundred seventy-eight billion, three hundred seventy-five million, five hundred twenty-six thousand, five hundred eighty-nine".