108991830049 has 4 divisors (see below), whose sum is σ = 109713630400. Its totient is φ = 108270029700.

The previous prime is 108991830047. The next prime is 108991830107. The reversal of 108991830049 is 940038199801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 940038199801 = 79 ⋅11899217719.

It is a cyclic number.

It is not a de Polignac number, because 108991830049 - 2¹ = 108991830047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 108991829978 and 108991830005.

It is not an unprimeable number, because it can be changed into a prime (108991830047) 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, 360899949 + ... + 360900250.

It is an arithmetic number, because the mean of its divisors is an integer number (27428407600).

Almost surely, 2^108991830049 is an apocalyptic number.

It is an amenable number.

108991830049 is a deficient number, since it is larger than the sum of its proper divisors (721800351).

108991830049 is an equidigital number, since it uses as much as digits as its factorization.

108991830049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721800350.

The product of its (nonzero) digits is 559872, while the sum is 52.

The spelling of 108991830049 in words is "one hundred eight billion, nine hundred ninety-one million, eight hundred thirty thousand, forty-nine".