11111113579145 has 4 divisors (see below), whose sum is σ = 13333336294980. Its totient is φ = 8888890863312.

The previous prime is 11111113579141. The next prime is 11111113579151. The reversal of 11111113579145 is 54197531111111.

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 3469736974729 + 7641376604416 = 1862723^2 + 2764304^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111113579145 - 2² = 11111113579141 is a prime.

It is a super-3 number, since 3×11111113579145³ (a number of 40 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11111113579141) 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, 1111111357910 + ... + 1111111357919.

It is an arithmetic number, because the mean of its divisors is an integer number (3333334073745).

Almost surely, 2^{11111113579145} is an apocalyptic number.

It is an amenable number.

11111113579145 is a deficient number, since it is larger than the sum of its proper divisors (2222222715835).

11111113579145 is an equidigital number, since it uses as much as digits as its factorization.

11111113579145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222222715834.

The product of its digits is 18900, while the sum is 41.

The spelling of 11111113579145 in words is "eleven trillion, one hundred eleven billion, one hundred thirteen million, five hundred seventy-nine thousand, one hundred forty-five".