11512354661215 has 32 divisors (see below), whose sum is σ = 13915482840000. Its totient is φ = 9143027712000.

The previous prime is 11512354661179. The next prime is 11512354661233. The reversal of 11512354661215 is 51216645321511.

It is not a de Polignac number, because 11512354661215 - 2¹¹ = 11512354659167 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 791927427 + ... + 791941963.

It is an arithmetic number, because the mean of its divisors is an integer number (434858838750).

Almost surely, 2^{11512354661215} is an apocalyptic number.

11512354661215 is a deficient number, since it is larger than the sum of its proper divisors (2403128178785).

11512354661215 is a wasteful number, since it uses less digits than its factorization.

11512354661215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16603.

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

Adding to 11512354661215 its reverse (51216645321511), we get a palindrome (62728999982726).

The spelling of 11512354661215 in words is "eleven trillion, five hundred twelve billion, three hundred fifty-four million, six hundred sixty-one thousand, two hundred fifteen".