11728326117 has 16 divisors (see below), whose sum is σ = 15763543488. Its totient is φ = 7756045440.

The previous prime is 11728326109. The next prime is 11728326121. The reversal of 11728326117 is 71162382711.

It is a happy number.

It is not a de Polignac number, because 11728326117 - 2³ = 11728326109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11728376117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1344823 + ... + 1353515.

It is an arithmetic number, because the mean of its divisors is an integer number (985221468).

Almost surely, 2^11728326117 is an apocalyptic number.

It is an amenable number.

11728326117 is a deficient number, since it is larger than the sum of its proper divisors (4035217371).

11728326117 is a wasteful number, since it uses less digits than its factorization.

11728326117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12260.

The product of its digits is 28224, while the sum is 39.

The spelling of 11728326117 in words is "eleven billion, seven hundred twenty-eight million, three hundred twenty-six thousand, one hundred seventeen".