108505018801 has 3 divisors (see below), whose sum is σ = 108505348203. Its totient is φ = 108504689400.

The previous prime is 108505018781. The next prime is 108505018813. The reversal of 108505018801 is 108810505801.

The square root of 108505018801 is 329401.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 29791105201 + 78713913600 = 172601^2 + 280560^2 .

It is not a de Polignac number, because 108505018801 - 2⁹ = 108505018289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108505088801) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 164701 + ... + 494101.

It is an arithmetic number, because the mean of its divisors is an integer number (36168449401).

Almost surely, 2^108505018801 is an apocalyptic number.

108505018801 is the 329401-st square number.

108505018801 is the 164701-st centered octagonal number.

It is an amenable number.

108505018801 is a deficient number, since it is larger than the sum of its proper divisors (329402).

108505018801 is an frugal number, since it uses more digits than its factorization.

108505018801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658802 (or 329401 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 37.

The spelling of 108505018801 in words is "one hundred eight billion, five hundred five million, eighteen thousand, eight hundred one".