11538455145 has 32 divisors (see below), whose sum is σ = 21187215360. Its totient is φ = 5252640960.

The previous prime is 11538455113. The next prime is 11538455171. The reversal of 11538455145 is 54155483511.

It is a happy number.

It is not a de Polignac number, because 11538455145 - 2⁵ = 11538455113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11538455097 and 11538455106.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204801 + ... + 254990.

It is an arithmetic number, because the mean of its divisors is an integer number (662100480).

Almost surely, 2^11538455145 is an apocalyptic number.

11538455145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11538455145 is a deficient number, since it is larger than the sum of its proper divisors (9648760215).

11538455145 is a wasteful number, since it uses less digits than its factorization.

11538455145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460045.

The product of its digits is 240000, while the sum is 42.

The spelling of 11538455145 in words is "eleven billion, five hundred thirty-eight million, four hundred fifty-five thousand, one hundred forty-five".