11115535145 has 16 divisors (see below), whose sum is σ = 15670573632. Its totient is φ = 7462176960.

The previous prime is 11115535111. The next prime is 11115535157. The reversal of 11115535145 is 54153551111.

It is a happy number.

It is not a de Polignac number, because 11115535145 - 2²² = 11111340841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7772387 + ... + 7773816.

It is an arithmetic number, because the mean of its divisors is an integer number (979410852).

Almost surely, 2^11115535145 is an apocalyptic number.

It is an amenable number.

11115535145 is a deficient number, since it is larger than the sum of its proper divisors (4555038487).

11115535145 is a wasteful number, since it uses less digits than its factorization.

11115535145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15546232.

The product of its digits is 7500, while the sum is 32.

The spelling of 11115535145 in words is "eleven billion, one hundred fifteen million, five hundred thirty-five thousand, one hundred forty-five".