8251731616 has 24 divisors (see below), whose sum is σ = 17100629280. Its totient is φ = 3908714688.

The previous prime is 8251731577. The next prime is 8251731637. The reversal of 8251731616 is 6161371528.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6785356 + ... + 6786571.

It is an arithmetic number, because the mean of its divisors is an integer number (712526220).

Almost surely, 2^8251731616 is an apocalyptic number.

It is an amenable number.

8251731616 is an abundant number, since it is smaller than the sum of its proper divisors (8848897664).

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

8251731616 is a wasteful number, since it uses less digits than its factorization.

8251731616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13571956 (or 13571948 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 8251731616 is about 90839.0423551460. The cubic root of 8251731616 is about 2020.7613716512.

The spelling of 8251731616 in words is "eight billion, two hundred fifty-one million, seven hundred thirty-one thousand, six hundred sixteen".