11603936945 has 4 divisors (see below), whose sum is σ = 13924724340. Its totient is φ = 9283149552.

The previous prime is 11603936941. The next prime is 11603936987. The reversal of 11603936945 is 54963930611.

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 2653074064 + 8950862881 = 51508^2 + 94609^2 .

It is a cyclic number.

It is not a de Polignac number, because 11603936945 - 2² = 11603936941 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11603936945.

It is not an unprimeable number, because it can be changed into a prime (11603936941) 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, 1160393690 + ... + 1160393699.

It is an arithmetic number, because the mean of its divisors is an integer number (3481181085).

Almost surely, 2^11603936945 is an apocalyptic number.

It is an amenable number.

11603936945 is a deficient number, since it is larger than the sum of its proper divisors (2320787395).

11603936945 is an equidigital number, since it uses as much as digits as its factorization.

11603936945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320787394.

The product of its (nonzero) digits is 524880, while the sum is 47.

The spelling of 11603936945 in words is "eleven billion, six hundred three million, nine hundred thirty-six thousand, nine hundred forty-five".