11728945151999 has 4 divisors (see below), whose sum is σ = 11757622279920. Its totient is φ = 11700268024080.

The previous prime is 11728945151971. The next prime is 11728945152011. The reversal of 11728945151999 is 99915154982711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11728945151999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11728945157999) 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, 14338563347 + ... + 14338564164.

It is an arithmetic number, because the mean of its divisors is an integer number (2939405569980).

Almost surely, 2^{11728945151999} is an apocalyptic number.

11728945151999 is a deficient number, since it is larger than the sum of its proper divisors (28677127921).

11728945151999 is an equidigital number, since it uses as much as digits as its factorization.

11728945151999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28677127920.

The product of its digits is 73483200, while the sum is 71.

The spelling of 11728945151999 in words is "eleven trillion, seven hundred twenty-eight billion, nine hundred forty-five million, one hundred fifty-one thousand, nine hundred ninety-nine".