11512018892 has 18 divisors (see below), whose sum is σ = 22143987684. Its totient is φ = 5232735640.

The previous prime is 11512018891. The next prime is 11512018913. The reversal of 11512018892 is 29881021511.

It is not an unprimeable number, because it can be changed into a prime (11512018891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11892098 + ... + 11893065.

It is an arithmetic number, because the mean of its divisors is an integer number (1230221538).

Almost surely, 2^11512018892 is an apocalyptic number.

It is an amenable number.

11512018892 is a deficient number, since it is larger than the sum of its proper divisors (10631968792).

11512018892 is a wasteful number, since it uses less digits than its factorization.

11512018892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23785189 (or 23785176 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 38.

The spelling of 11512018892 in words is "eleven billion, five hundred twelve million, eighteen thousand, eight hundred ninety-two".