11540315315 has 4 divisors (see below), whose sum is σ = 13848378384. Its totient is φ = 9232252248.

The previous prime is 11540315299. The next prime is 11540315327. The reversal of 11540315315 is 51351304511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51351304511 = 13 ⋅3950100347.

It is a cyclic number.

It is not a de Polignac number, because 11540315315 - 2⁴ = 11540315299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154031527 + ... + 1154031536.

It is an arithmetic number, because the mean of its divisors is an integer number (3462094596).

Almost surely, 2^11540315315 is an apocalyptic number.

11540315315 is a deficient number, since it is larger than the sum of its proper divisors (2308063069).

11540315315 is an equidigital number, since it uses as much as digits as its factorization.

11540315315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308063068.

The product of its (nonzero) digits is 4500, while the sum is 29.

Adding to 11540315315 its reverse (51351304511), we get a palindrome (62891619826).

The spelling of 11540315315 in words is "eleven billion, five hundred forty million, three hundred fifteen thousand, three hundred fifteen".