11109939158 has 4 divisors (see below), whose sum is σ = 16664908740. Its totient is φ = 5554969578.

The previous prime is 11109939157. The next prime is 11109939167. The reversal of 11109939158 is 85193990111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85193990111 = 17 ⋅5011411183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11109939157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777484788 + ... + 2777484791.

It is an arithmetic number, because the mean of its divisors is an integer number (4166227185).

Almost surely, 2^11109939158 is an apocalyptic number.

11109939158 is a deficient number, since it is larger than the sum of its proper divisors (5554969582).

11109939158 is an equidigital number, since it uses as much as digits as its factorization.

11109939158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5554969581.

The product of its (nonzero) digits is 87480, while the sum is 47.

The spelling of 11109939158 in words is "eleven billion, one hundred nine million, nine hundred thirty-nine thousand, one hundred fifty-eight".