8251516617 has 4 divisors (see below), whose sum is σ = 11002022160. Its totient is φ = 5501011076.

The previous prime is 8251516613. The next prime is 8251516643. The reversal of 8251516617 is 7166151528.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8251516617 - 2² = 8251516613 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8251516613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1375252767 + ... + 1375252772.

It is an arithmetic number, because the mean of its divisors is an integer number (2750505540).

Almost surely, 2^8251516617 is an apocalyptic number.

It is an amenable number.

8251516617 is a deficient number, since it is larger than the sum of its proper divisors (2750505543).

8251516617 is a wasteful number, since it uses less digits than its factorization.

8251516617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750505542.

The product of its digits is 100800, while the sum is 42.

The square root of 8251516617 is about 90837.8589410825. The cubic root of 8251516617 is about 2020.7438211754.

The spelling of 8251516617 in words is "eight billion, two hundred fifty-one million, five hundred sixteen thousand, six hundred seventeen".