11521163211415 has 16 divisors (see below), whose sum is σ = 16242423101856. Its totient is φ = 7734487190400.

The previous prime is 11521163211367. The next prime is 11521163211449. The reversal of 11521163211415 is 51411236112511.

It is a de Polignac number, because none of the positive numbers 2^k-11521163211415 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 15 ways as a sum of consecutive naturals, for example, 8056756776 + ... + 8056758205.

It is an arithmetic number, because the mean of its divisors is an integer number (1015151443866).

Almost surely, 2^{11521163211415} is an apocalyptic number.

11521163211415 is a deficient number, since it is larger than the sum of its proper divisors (4721259890441).

11521163211415 is a wasteful number, since it uses less digits than its factorization.

11521163211415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16113515010.

The product of its digits is 7200, while the sum is 34.

Adding to 11521163211415 its reverse (51411236112511), we get a palindrome (62932399323926).

The spelling of 11521163211415 in words is "eleven trillion, five hundred twenty-one billion, one hundred sixty-three million, two hundred eleven thousand, four hundred fifteen".