11133420145 has 4 divisors (see below), whose sum is σ = 13360104180. Its totient is φ = 8906736112.

The previous prime is 11133420079. The next prime is 11133420161. The reversal of 11133420145 is 54102433111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54102433111 = 277 ⋅195315643.

It can be written as a sum of positive squares in 2 ways, for example, as 7675862544 + 3457557601 = 87612^2 + 58801^2 .

It is a cyclic number.

It is not a de Polignac number, because 11133420145 - 2²⁹ = 10596549233 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, 1113342010 + ... + 1113342019.

It is an arithmetic number, because the mean of its divisors is an integer number (3340026045).

Almost surely, 2^11133420145 is an apocalyptic number.

It is an amenable number.

11133420145 is a deficient number, since it is larger than the sum of its proper divisors (2226684035).

11133420145 is an equidigital number, since it uses as much as digits as its factorization.

11133420145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226684034.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 11133420145 its reverse (54102433111), we get a palindrome (65235853256).

The spelling of 11133420145 in words is "eleven billion, one hundred thirty-three million, four hundred twenty thousand, one hundred forty-five".