108789815819 has 4 divisors (see below), whose sum is σ = 108791181840. Its totient is φ = 108788449800.

The previous prime is 108789815741. The next prime is 108789815833. The reversal of 108789815819 is 918518987801.

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

It is a cyclic number.

It is not a de Polignac number, because 108789815819 - 2¹² = 108789811723 is a prime.

It is a super-2 number, since 2×108789815819² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108789815879) 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, 555632 + ... + 725469.

It is an arithmetic number, because the mean of its divisors is an integer number (27197795460).

Almost surely, 2^108789815819 is an apocalyptic number.

108789815819 is a deficient number, since it is larger than the sum of its proper divisors (1366021).

108789815819 is an equidigital number, since it uses as much as digits as its factorization.

108789815819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366020.

The product of its (nonzero) digits is 11612160, while the sum is 65.

The spelling of 108789815819 in words is "one hundred eight billion, seven hundred eighty-nine million, eight hundred fifteen thousand, eight hundred nineteen".