11538398512 has 20 divisors (see below), whose sum is σ = 22357883736. Its totient is φ = 5768622080.

The previous prime is 11538398497. The next prime is 11538398513. The reversal of 11538398512 is 21589383511.

It is not an unprimeable number, because it can be changed into a prime (11538398513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161712 + ... + 221872.

Almost surely, 2^11538398512 is an apocalyptic number.

It is an amenable number.

11538398512 is a deficient number, since it is larger than the sum of its proper divisors (10819485224).

11538398512 is a wasteful number, since it uses less digits than its factorization.

11538398512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72156 (or 72150 counting only the distinct ones).

The product of its digits is 259200, while the sum is 46.

The spelling of 11538398512 in words is "eleven billion, five hundred thirty-eight million, three hundred ninety-eight thousand, five hundred twelve".