82317163138555 has 4 divisors (see below), whose sum is σ = 98780595766272. Its totient is φ = 65853730510840.

The previous prime is 82317163138537. The next prime is 82317163138559. The reversal of 82317163138555 is 55583136171328.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 82317163138555 - 2⁵ = 82317163138523 is a prime.

It is a super-2 number, since 2×82317163138555² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82317163138555.

It is not an unprimeable number, because it can be changed into a prime (82317163138559) 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, 8231716313851 + ... + 8231716313860.

It is an arithmetic number, because the mean of its divisors is an integer number (24695148941568).

Almost surely, 2^{82317163138555} is an apocalyptic number.

82317163138555 is a deficient number, since it is larger than the sum of its proper divisors (16463432627717).

82317163138555 is a wasteful number, since it uses less digits than its factorization.

82317163138555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16463432627716.

The product of its digits is 18144000, while the sum is 58.

The spelling of 82317163138555 in words is "eighty-two trillion, three hundred seventeen billion, one hundred sixty-three million, one hundred thirty-eight thousand, five hundred fifty-five".