11728624569 has 4 divisors (see below), whose sum is σ = 15638166096. Its totient is φ = 7819083044.

The previous prime is 11728624553. The next prime is 11728624591. The reversal of 11728624569 is 96542682711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11728624569 - 2⁴ = 11728624553 is a prime.

It is a super-2 number, since 2×11728624569² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11728624519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1954770759 + ... + 1954770764.

It is an arithmetic number, because the mean of its divisors is an integer number (3909541524).

Almost surely, 2^11728624569 is an apocalyptic number.

It is an amenable number.

11728624569 is a deficient number, since it is larger than the sum of its proper divisors (3909541527).

11728624569 is an equidigital number, since it uses as much as digits as its factorization.

11728624569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3909541526.

The product of its digits is 1451520, while the sum is 51.

The spelling of 11728624569 in words is "eleven billion, seven hundred twenty-eight million, six hundred twenty-four thousand, five hundred sixty-nine".