86634000521 has 2 divisors, whose sum is σ = 86634000522. Its totient is φ = 86634000520.

The previous prime is 86634000493. The next prime is 86634000533. The reversal of 86634000521 is 12500043668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83948688121 + 2685312400 = 289739^2 + 51820^2 .

It is a cyclic number.

It is not a de Polignac number, because 86634000521 - 2⁶ = 86634000457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (86634000721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43317000260 + 43317000261.

It is an arithmetic number, because the mean of its divisors is an integer number (43317000261).

Almost surely, 2^86634000521 is an apocalyptic number.

It is an amenable number.

86634000521 is a deficient number, since it is larger than the sum of its proper divisors (1).

86634000521 is an equidigital number, since it uses as much as digits as its factorization.

86634000521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 86634000521 in words is "eighty-six billion, six hundred thirty-four million, five hundred twenty-one", and thus it is an aban number.