11911209093 has 12 divisors (see below), whose sum is σ = 19662948448. Its totient is φ = 6806405160.

The previous prime is 11911209083. The next prime is 11911209119. The reversal of 11911209093 is 39090211911.

It is not a de Polignac number, because 11911209093 - 2¹⁰ = 11911208069 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 (11911209073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94533343 + ... + 94533468.

Almost surely, 2^11911209093 is an apocalyptic number.

It is an amenable number.

11911209093 is a deficient number, since it is larger than the sum of its proper divisors (7751739355).

11911209093 is a wasteful number, since it uses less digits than its factorization.

11911209093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189066824 (or 189066821 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 36.

The spelling of 11911209093 in words is "eleven billion, nine hundred eleven million, two hundred nine thousand, ninety-three".