11112354509 has 2 divisors, whose sum is σ = 11112354510. Its totient is φ = 11112354508.

The previous prime is 11112354503. The next prime is 11112354557. The reversal of 11112354509 is 90545321111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11097990409 + 14364100 = 105347^2 + 3790^2 .

It is a cyclic number.

It is not a de Polignac number, because 11112354509 - 2²⁴ = 11095577293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112354503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556177254 + 5556177255.

It is an arithmetic number, because the mean of its divisors is an integer number (5556177255).

Almost surely, 2^11112354509 is an apocalyptic number.

It is an amenable number.

11112354509 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112354509 is an equidigital number, since it uses as much as digits as its factorization.

11112354509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 11112354509 in words is "eleven billion, one hundred twelve million, three hundred fifty-four thousand, five hundred nine".