11513405015 has 64 divisors (see below), whose sum is σ = 17116323840. Its totient is φ = 7258688640.

The previous prime is 11513405011. The next prime is 11513405017. The reversal of 11513405015 is 51050431511.

11513405015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11513405015 - 2² = 11513405011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11513405011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4774160 + ... + 4776570.

It is an arithmetic number, because the mean of its divisors is an integer number (267442560).

Almost surely, 2^11513405015 is an apocalyptic number.

11513405015 is a deficient number, since it is larger than the sum of its proper divisors (5602918825).

11513405015 is a wasteful number, since it uses less digits than its factorization.

11513405015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 11513405015 its reverse (51050431511), we get a palindrome (62563836526).

The spelling of 11513405015 in words is "eleven billion, five hundred thirteen million, four hundred five thousand, fifteen".