108617478326605 has 4 divisors (see below), whose sum is σ = 130340973991932. Its totient is φ = 86893982661280.

The previous prime is 108617478326593. The next prime is 108617478326629. The reversal of 108617478326605 is 506623874716801.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75872967039081 + 32744511287524 = 8710509^2 + 5722282^2 .

It is not a de Polignac number, because 108617478326605 - 2²³ = 108617469937997 is a prime.

It is a super-2 number, since 2×108617478326605² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 10861747832656 + ... + 10861747832665.

It is an arithmetic number, because the mean of its divisors is an integer number (32585243497983).

Almost surely, 2^{108617478326605} is an apocalyptic number.

It is an amenable number.

108617478326605 is a deficient number, since it is larger than the sum of its proper divisors (21723495665327).

108617478326605 is an equidigital number, since it uses as much as digits as its factorization.

108617478326605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21723495665326.

The product of its (nonzero) digits is 81285120, while the sum is 64.

The spelling of 108617478326605 in words is "one hundred eight trillion, six hundred seventeen billion, four hundred seventy-eight million, three hundred twenty-six thousand, six hundred five".