11385770545 has 4 divisors (see below), whose sum is σ = 13662924660. Its totient is φ = 9108616432.

The previous prime is 11385770497. The next prime is 11385770567. The reversal of 11385770545 is 54507758311.

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 3105498529 + 8280272016 = 55727^2 + 90996^2 .

It is a cyclic number.

It is not a de Polignac number, because 11385770545 - 2¹¹ = 11385768497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11385770495 and 11385770504.

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, 1138577050 + ... + 1138577059.

It is an arithmetic number, because the mean of its divisors is an integer number (3415731165).

Almost surely, 2^11385770545 is an apocalyptic number.

It is an amenable number.

11385770545 is a deficient number, since it is larger than the sum of its proper divisors (2277154115).

11385770545 is an equidigital number, since it uses as much as digits as its factorization.

11385770545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277154114.

The product of its (nonzero) digits is 588000, while the sum is 46.

The spelling of 11385770545 in words is "eleven billion, three hundred eighty-five million, seven hundred seventy thousand, five hundred forty-five".