216526520526 has 16 divisors (see below), whose sum is σ = 433065546624. Its totient is φ = 72173422584.

The previous prime is 216526520461. The next prime is 216526520543. The reversal of 216526520526 is 625025625612.

216526520526 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287956 + ... + 718311.

It is an arithmetic number, because the mean of its divisors is an integer number (27066596664).

Almost surely, 2^216526520526 is an apocalyptic number.

216526520526 is an abundant number, since it is smaller than the sum of its proper divisors (216539026098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216526520526 is a wasteful number, since it uses less digits than its factorization.

216526520526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042135.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 216526520526 in words is "two hundred sixteen billion, five hundred twenty-six million, five hundred twenty thousand, five hundred twenty-six".