11512664513215 has 8 divisors (see below), whose sum is σ = 14075861518368. Its totient is φ = 9036355542240.

The previous prime is 11512664513209. The next prime is 11512664513219. The reversal of 11512664513215 is 51231546621511.

11512664513215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-11512664513215 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11512664513219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21722008251 + ... + 21722008780.

It is an arithmetic number, because the mean of its divisors is an integer number (1759482689796).

Almost surely, 2^{11512664513215} is an apocalyptic number.

11512664513215 is a deficient number, since it is larger than the sum of its proper divisors (2563197005153).

11512664513215 is an equidigital number, since it uses as much as digits as its factorization.

11512664513215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43444017089.

The product of its digits is 216000, while the sum is 43.

The spelling of 11512664513215 in words is "eleven trillion, five hundred twelve billion, six hundred sixty-four million, five hundred thirteen thousand, two hundred fifteen".