11111161310613 has 24 divisors (see below), whose sum is σ = 19753175664768. Its totient is φ = 5860832339232.

The previous prime is 11111161310609. The next prime is 11111161310629. The reversal of 11111161310613 is 31601316111111.

11111161310613 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 1 + 16 + 1 + 31 + 0 + 613 = 666.

It is not a de Polignac number, because 11111161310613 - 2² = 11111161310609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111161310603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6783369945 + ... + 6783371582.

It is an arithmetic number, because the mean of its divisors is an integer number (823048986032).

Almost surely, 2^{11111161310613} is an apocalyptic number.

11111161310613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11111161310613 is a deficient number, since it is larger than the sum of its proper divisors (8642014354155).

11111161310613 is a wasteful number, since it uses less digits than its factorization.

11111161310613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13566741553 (or 13566741550 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

Adding to 11111161310613 its reverse (31601316111111), we get a palindrome (42712477421724).

The spelling of 11111161310613 in words is "eleven trillion, one hundred eleven billion, one hundred sixty-one million, three hundred ten thousand, six hundred thirteen".