11112354545 has 4 divisors (see below), whose sum is σ = 13334825460. Its totient is φ = 8889883632.

The previous prime is 11112354509. The next prime is 11112354557. The reversal of 11112354545 is 54545321111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54545321111 = 523 ⋅104293157.

It can be written as a sum of positive squares in 2 ways, for example, as 1179441649 + 9932912896 = 34343^2 + 99664^2 .

It is a cyclic number.

It is not a de Polignac number, because 11112354545 - 2¹⁴ = 11112338161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111235450 + ... + 1111235459.

It is an arithmetic number, because the mean of its divisors is an integer number (3333706365).

Almost surely, 2^11112354545 is an apocalyptic number.

It is an amenable number.

11112354545 is a deficient number, since it is larger than the sum of its proper divisors (2222470915).

11112354545 is an equidigital number, since it uses as much as digits as its factorization.

11112354545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222470914.

The product of its digits is 12000, while the sum is 32.

Adding to 11112354545 its reverse (54545321111), we get a palindrome (65657675656).

The spelling of 11112354545 in words is "eleven billion, one hundred twelve million, three hundred fifty-four thousand, five hundred forty-five".