108403189973 has 4 divisors (see below), whose sum is σ = 116741896908. Its totient is φ = 100064483040.

The previous prime is 108403189943. The next prime is 108403189991. The reversal of 108403189973 is 379981304801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 379981304801 = 7 ⋅54283043543.

It can be written as a sum of positive squares in 2 ways, for example, as 26968865284 + 81434324689 = 164222^2 + 285367^2 .

It is a cyclic number.

It is not a de Polignac number, because 108403189973 - 2¹⁴ = 108403173589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108403189943) 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, 4169353448 + ... + 4169353473.

It is an arithmetic number, because the mean of its divisors is an integer number (29185474227).

Almost surely, 2^108403189973 is an apocalyptic number.

108403189973 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

108403189973 is a deficient number, since it is larger than the sum of its proper divisors (8338706935).

108403189973 is an equidigital number, since it uses as much as digits as its factorization.

108403189973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8338706934.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 108403189973 in words is "one hundred eight billion, four hundred three million, one hundred eighty-nine thousand, nine hundred seventy-three".