11728234471801 has 3 divisors (see below), whose sum is σ = 11728237896453. Its totient is φ = 11728231047150.

The previous prime is 11728234471799. The next prime is 11728234471853. The reversal of 11728234471801 is 10817443282711.

The square root of 11728234471801 is 3424651.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 11728234471801 - 2¹ = 11728234471799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11728234475801) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1712326 + ... + 5136976.

It is an arithmetic number, because the mean of its divisors is an integer number (3909412632151).

Almost surely, 2^{11728234471801} is an apocalyptic number.

11728234471801 is the 3424651-st square number.

11728234471801 is the 1712326-th centered octagonal number.

It is an amenable number.

11728234471801 is a deficient number, since it is larger than the sum of its proper divisors (3424652).

11728234471801 is an frugal number, since it uses more digits than its factorization.

11728234471801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6849302 (or 3424651 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 49.

Multiplying 11728234471801 by its sum of digits (49), we get a square (574683489118249 = 23972557²).

The spelling of 11728234471801 in words is "eleven trillion, seven hundred twenty-eight billion, two hundred thirty-four million, four hundred seventy-one thousand, eight hundred one".