11191117836 has 24 divisors (see below), whose sum is σ = 26134529904. Its totient is φ = 3727240960.

The previous prime is 11191117829. The next prime is 11191117841. The reversal of 11191117836 is 63871119111.

It is a super-2 number, since 2×11191117836² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11191117794 and 11191117803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376545 + ... + 405176.

It is an arithmetic number, because the mean of its divisors is an integer number (1088938746).

Almost surely, 2^11191117836 is an apocalyptic number.

It is an amenable number.

11191117836 is an abundant number, since it is smaller than the sum of its proper divisors (14943412068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11191117836 is a wasteful number, since it uses less digits than its factorization.

11191117836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782921 (or 782919 counting only the distinct ones).

The product of its digits is 9072, while the sum is 39.

The spelling of 11191117836 in words is "eleven billion, one hundred ninety-one million, one hundred seventeen thousand, eight hundred thirty-six".