11728087439 has 2 divisors, whose sum is σ = 11728087440. Its totient is φ = 11728087438.

The previous prime is 11728087429. The next prime is 11728087447. The reversal of 11728087439 is 93478082711.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11728087439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11728087429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5864043719 + 5864043720.

It is an arithmetic number, because the mean of its divisors is an integer number (5864043720).

Almost surely, 2^11728087439 is an apocalyptic number.

11728087439 is a deficient number, since it is larger than the sum of its proper divisors (1).

11728087439 is an equidigital number, since it uses as much as digits as its factorization.

11728087439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 50.

The spelling of 11728087439 in words is "eleven billion, seven hundred twenty-eight million, eighty-seven thousand, four hundred thirty-nine".