108978508799 has 4 divisors (see below), whose sum is σ = 108989342040. Its totient is φ = 108967675560.

The previous prime is 108978508711. The next prime is 108978508813. The reversal of 108978508799 is 997805879801.

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 108978508799 - 2¹⁶ = 108978443263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108978505799) 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, 5401517 + ... + 5421654.

It is an arithmetic number, because the mean of its divisors is an integer number (27247335510).

Almost surely, 2^108978508799 is an apocalyptic number.

108978508799 is a deficient number, since it is larger than the sum of its proper divisors (10833241).

108978508799 is a wasteful number, since it uses less digits than its factorization.

108978508799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10833240.

The product of its (nonzero) digits is 91445760, while the sum is 71.

The spelling of 108978508799 in words is "one hundred eight billion, nine hundred seventy-eight million, five hundred eight thousand, seven hundred ninety-nine".