11500781092 has 24 divisors (see below), whose sum is σ = 21214267200. Its totient is φ = 5440379616.

The previous prime is 11500781069. The next prime is 11500781093. The reversal of 11500781092 is 29018700511.

It is a happy number.

It is a super-2 number, since 2×11500781092² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11500781093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45367 + ... + 158302.

It is an arithmetic number, because the mean of its divisors is an integer number (883927800).

Almost surely, 2^11500781092 is an apocalyptic number.

It is an amenable number.

11500781092 is a deficient number, since it is larger than the sum of its proper divisors (9713486108).

11500781092 is a wasteful number, since it uses less digits than its factorization.

11500781092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204435 (or 204433 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 34.

The spelling of 11500781092 in words is "eleven billion, five hundred million, seven hundred eighty-one thousand, ninety-two".