86635256617617 has 4 divisors (see below), whose sum is σ = 115513675490160. Its totient is φ = 57756837745076.

The previous prime is 86635256617579. The next prime is 86635256617639. The reversal of 86635256617617 is 71671665253668.

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 86635256617617 - 2¹¹ = 86635256615569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86635256617687) 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, 14439209436267 + ... + 14439209436272.

It is an arithmetic number, because the mean of its divisors is an integer number (28878418872540).

Almost surely, 2^{86635256617617} is an apocalyptic number.

It is an amenable number.

86635256617617 is a deficient number, since it is larger than the sum of its proper divisors (28878418872543).

86635256617617 is a wasteful number, since it uses less digits than its factorization.

86635256617617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28878418872542.

The product of its digits is 457228800, while the sum is 69.

The spelling of 86635256617617 in words is "eighty-six trillion, six hundred thirty-five billion, two hundred fifty-six million, six hundred seventeen thousand, six hundred seventeen".