11919191092 has 12 divisors (see below), whose sum is σ = 21212120160. Its totient is φ = 5858585336.

The previous prime is 11919191051. The next prime is 11919191107. The reversal of 11919191092 is 29019191911.

It is a super-2 number, since 2×11919191092² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25252288 + ... + 25252759.

It is an arithmetic number, because the mean of its divisors is an integer number (1767676680).

Almost surely, 2^11919191092 is an apocalyptic number.

It is an amenable number.

11919191092 is a deficient number, since it is larger than the sum of its proper divisors (9292929068).

11919191092 is a wasteful number, since it uses less digits than its factorization.

11919191092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50505110 (or 50505108 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 43.

The spelling of 11919191092 in words is "eleven billion, nine hundred nineteen million, one hundred ninety-one thousand, ninety-two".