8348171881538 has 4 divisors (see below), whose sum is σ = 12522257822310. Its totient is φ = 4174085940768.

The previous prime is 8348171881529. The next prime is 8348171881549. The reversal of 8348171881538 is 8351881718438.

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

It can be written as a sum of positive squares in only one way, i.e., 5645314224169 + 2702857657369 = 2375987^2 + 1644037^2 .

It is a super-3 number, since 3×8348171881538³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2087042970383 + ... + 2087042970386.

Almost surely, 2^{8348171881538} is an apocalyptic number.

8348171881538 is a deficient number, since it is larger than the sum of its proper divisors (4174085940772).

8348171881538 is a wasteful number, since it uses less digits than its factorization.

8348171881538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174085940771.

The product of its digits is 41287680, while the sum is 65.

The spelling of 8348171881538 in words is "eight trillion, three hundred forty-eight billion, one hundred seventy-one million, eight hundred eighty-one thousand, five hundred thirty-eight".