108760784521 has 3 divisors (see below), whose sum is σ = 108761114311. Its totient is φ = 108760454732.

The previous prime is 108760784477. The next prime is 108760784527. The reversal of 108760784521 is 125487067801.

The square root of 108760784521 is 329789.

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., 41938534521 + 66822250000 = 204789^2 + 258500^2 .

It is not a de Polignac number, because 108760784521 - 2¹⁵ = 108760751753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108760784527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 164895 + ... + 494683.

Almost surely, 2^108760784521 is an apocalyptic number.

108760784521 is the 329789-th square number.

108760784521 is the 164895-th centered octagonal number.

It is an amenable number.

108760784521 is a deficient number, since it is larger than the sum of its proper divisors (329790).

108760784521 is an frugal number, since it uses more digits than its factorization.

108760784521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659578 (or 329789 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 49.

Multiplying 108760784521 by its sum of digits (49), we get a square (5329278441529 = 2308523²).

The spelling of 108760784521 in words is "one hundred eight billion, seven hundred sixty million, seven hundred eighty-four thousand, five hundred twenty-one".