11523536440415 has 4 divisors (see below), whose sum is σ = 13828243728504. Its totient is φ = 9218829152328.

The previous prime is 11523536440387. The next prime is 11523536440439. The reversal of 11523536440415 is 51404463532511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11523536440415 - 2⁸ = 11523536440159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1152353644037 + ... + 1152353644046.

It is an arithmetic number, because the mean of its divisors is an integer number (3457060932126).

Almost surely, 2^{11523536440415} is an apocalyptic number.

11523536440415 is a deficient number, since it is larger than the sum of its proper divisors (2304707288089).

11523536440415 is an equidigital number, since it uses as much as digits as its factorization.

11523536440415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304707288088.

The product of its (nonzero) digits is 864000, while the sum is 44.

Adding to 11523536440415 its reverse (51404463532511), we get a palindrome (62927999972926).

The spelling of 11523536440415 in words is "eleven trillion, five hundred twenty-three billion, five hundred thirty-six million, four hundred forty thousand, four hundred fifteen".