11131515115 has 8 divisors (see below), whose sum is σ = 15266077920. Its totient is φ = 7633038912.

The previous prime is 11131515077. The next prime is 11131515127. The reversal of 11131515115 is 51151513111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11131515115 - 2²³ = 11123126507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11131515115.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159021610 + ... + 159021679.

It is an arithmetic number, because the mean of its divisors is an integer number (1908259740).

Almost surely, 2^11131515115 is an apocalyptic number.

11131515115 is a deficient number, since it is larger than the sum of its proper divisors (4134562805).

11131515115 is an equidigital number, since it uses as much as digits as its factorization.

11131515115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318043301.

The product of its digits is 375, while the sum is 25.

The spelling of 11131515115 in words is "eleven billion, one hundred thirty-one million, five hundred fifteen thousand, one hundred fifteen".