11534320420015 has 4 divisors (see below), whose sum is σ = 13841184504024. Its totient is φ = 9227456336008.

The previous prime is 11534320420003. The next prime is 11534320420031. The reversal of 11534320420015 is 51002402343511.

11534320420015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11534320420015 is a prime.

It is a Duffinian number.

It is a congruent 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, 1153432041997 + ... + 1153432042006.

It is an arithmetic number, because the mean of its divisors is an integer number (3460296126006).

Almost surely, 2^{11534320420015} is an apocalyptic number.

11534320420015 is a deficient number, since it is larger than the sum of its proper divisors (2306864084009).

11534320420015 is an equidigital number, since it uses as much as digits as its factorization.

11534320420015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306864084008.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 11534320420015 its reverse (51002402343511), we get a palindrome (62536722763526).

The spelling of 11534320420015 in words is "eleven trillion, five hundred thirty-four billion, three hundred twenty million, four hundred twenty thousand, fifteen".