11111079517 has 4 divisors (see below), whose sum is σ = 11494220220. Its totient is φ = 10727938816.

The previous prime is 11111079503. The next prime is 11111079523. The reversal of 11111079517 is 71597011111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6082284121 + 5028795396 = 77989^2 + 70914^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111079517 - 2¹⁹ = 11110555229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111079017) 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, 191570308 + ... + 191570365.

It is an arithmetic number, because the mean of its divisors is an integer number (2873555055).

Almost surely, 2^11111079517 is an apocalyptic number.

It is an amenable number.

11111079517 is a deficient number, since it is larger than the sum of its proper divisors (383140703).

11111079517 is an equidigital number, since it uses as much as digits as its factorization.

11111079517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383140702.

The product of its (nonzero) digits is 2205, while the sum is 34.

The spelling of 11111079517 in words is "eleven billion, one hundred eleven million, seventy-nine thousand, five hundred seventeen".