8157538617 has 8 divisors (see below), whose sum is σ = 11227580160. Its totient is φ = 5262928080.

The previous prime is 8157538583. The next prime is 8157538633. The reversal of 8157538617 is 7168357518.

8157538617 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8157538617 - 2¹² = 8157534521 is a prime.

It is a super-3 number, since 3×8157538617³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8157538617.

It is not an unprimeable number, because it can be changed into a prime (8157538117) 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 7 ways as a sum of consecutive naturals, for example, 43857642 + ... + 43857827.

It is an arithmetic number, because the mean of its divisors is an integer number (1403447520).

Almost surely, 2^8157538617 is an apocalyptic number.

It is an amenable number.

8157538617 is a deficient number, since it is larger than the sum of its proper divisors (3070041543).

8157538617 is a wasteful number, since it uses less digits than its factorization.

8157538617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87715503.

The product of its digits is 1411200, while the sum is 51.

The square root of 8157538617 is about 90319.0933136510. The cubic root of 8157538617 is about 2013.0429735982.

The spelling of 8157538617 in words is "eight billion, one hundred fifty-seven million, five hundred thirty-eight thousand, six hundred seventeen".