87664061633539 has 2 divisors, whose sum is σ = 87664061633540. Its totient is φ = 87664061633538.

The previous prime is 87664061633507. The next prime is 87664061633611. The reversal of 87664061633539 is 93533616046678.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87664061633539 - 2⁵ = 87664061633507 is a prime.

It is not a weakly prime, because it can be changed into another prime (87664061633339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43832030816769 + 43832030816770.

It is an arithmetic number, because the mean of its divisors is an integer number (43832030816770).

Almost surely, 2^{87664061633539} is an apocalyptic number.

87664061633539 is a deficient number, since it is larger than the sum of its proper divisors (1).

87664061633539 is an equidigital number, since it uses as much as digits as its factorization.

87664061633539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352719360, while the sum is 67.

The spelling of 87664061633539 in words is "eighty-seven trillion, six hundred sixty-four billion, sixty-one million, six hundred thirty-three thousand, five hundred thirty-nine".