86209553521 has 16 divisors (see below), whose sum is σ = 108971747584. Its totient is φ = 66366247104.

The previous prime is 86209553501. The next prime is 86209553543. The reversal of 86209553521 is 12535590268.

It is a cyclic number.

It is not a de Polignac number, because 86209553521 - 2¹⁵ = 86209520753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86209553501) 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 in 15 ways as a sum of consecutive naturals, for example, 12798765 + ... + 12805498.

It is an arithmetic number, because the mean of its divisors is an integer number (6810734224).

Almost surely, 2^86209553521 is an apocalyptic number.

It is an amenable number.

86209553521 is a deficient number, since it is larger than the sum of its proper divisors (22762194063).

86209553521 is a wasteful number, since it uses less digits than its factorization.

86209553521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25604320.

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 86209553521 in words is "eighty-six billion, two hundred nine million, five hundred fifty-three thousand, five hundred twenty-one".