8251216536 has 64 divisors (see below), whose sum is σ = 20863180800. Its totient is φ = 2719116288.

The previous prime is 8251216517. The next prime is 8251216549. The reversal of 8251216536 is 6356121528.

It is a junction number, because it is equal to n+sod(n) for n = 8251216494 and 8251216503.

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 15 ways as a sum of consecutive naturals, for example, 3684105 + ... + 3686343.

It is an arithmetic number, because the mean of its divisors is an integer number (325987200).

Almost surely, 2^8251216536 is an apocalyptic number.

It is an amenable number.

8251216536 is an abundant number, since it is smaller than the sum of its proper divisors (12611964264).

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

8251216536 is a wasteful number, since it uses less digits than its factorization.

8251216536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928 (or 3924 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 8251216536 is about 90836.2071863417. The cubic root of 8251216536 is about 2020.7193249038.

The spelling of 8251216536 in words is "eight billion, two hundred fifty-one million, two hundred sixteen thousand, five hundred thirty-six".