11547124066 has 4 divisors (see below), whose sum is σ = 17320686102. Its totient is φ = 5773562032.

The previous prime is 11547124037. The next prime is 11547124123. The reversal of 11547124066 is 66042174511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66042174511 = 10009 ⋅6598279.

It can be written as a sum of positive squares in only one way, i.e., 8413475625 + 3133648441 = 91725^2 + 55979^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2886781015 + ... + 2886781018.

Almost surely, 2^11547124066 is an apocalyptic number.

11547124066 is a deficient number, since it is larger than the sum of its proper divisors (5773562036).

11547124066 is an equidigital number, since it uses as much as digits as its factorization.

11547124066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5773562035.

The product of its (nonzero) digits is 40320, while the sum is 37.

Adding to 11547124066 its reverse (66042174511), we get a palindrome (77589298577).

The spelling of 11547124066 in words is "eleven billion, five hundred forty-seven million, one hundred twenty-four thousand, sixty-six".