11515316611112 has 8 divisors (see below), whose sum is σ = 21591218645850. Its totient is φ = 5757658305552.

The previous prime is 11515316611091. The next prime is 11515316611157. The reversal of 11515316611112 is 21111661351511.

It can be written as a sum of positive squares in only one way, i.e., 10531621600516 + 983695010596 = 3245246^2 + 991814^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719707288187 + ... + 719707288202.

Almost surely, 2^{11515316611112} is an apocalyptic number.

It is an amenable number.

11515316611112 is a deficient number, since it is larger than the sum of its proper divisors (10075902034738).

11515316611112 is a wasteful number, since it uses less digits than its factorization.

11515316611112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439414576395 (or 1439414576391 counting only the distinct ones).

The product of its digits is 5400, while the sum is 35.

Adding to 11515316611112 its reverse (21111661351511), we get a palindrome (32626977962623).

The spelling of 11515316611112 in words is "eleven trillion, five hundred fifteen billion, three hundred sixteen million, six hundred eleven thousand, one hundred twelve".