11515316611123 has 4 divisors (see below), whose sum is σ = 12401110196608. Its totient is φ = 10629523025640.

The previous prime is 11515316611091. The next prime is 11515316611157. The reversal of 11515316611123 is 32111661351511.

11515316611123 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 not a de Polignac number, because 11515316611123 - 2⁵ = 11515316611091 is a prime.

It is a super-2 number, since 2×11515316611123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11515316611423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442896792723 + ... + 442896792748.

It is an arithmetic number, because the mean of its divisors is an integer number (3100277549152).

Almost surely, 2^{11515316611123} is an apocalyptic number.

11515316611123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11515316611123 is a deficient number, since it is larger than the sum of its proper divisors (885793585485).

11515316611123 is an equidigital number, since it uses as much as digits as its factorization.

11515316611123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885793585484.

The product of its digits is 16200, while the sum is 37.

Adding to 11515316611123 its reverse (32111661351511), we get a palindrome (43626977962634).

The spelling of 11515316611123 in words is "eleven trillion, five hundred fifteen billion, three hundred sixteen million, six hundred eleven thousand, one hundred twenty-three".