11439928571 has 2 divisors, whose sum is σ = 11439928572. Its totient is φ = 11439928570.

The previous prime is 11439928561. The next prime is 11439928579. The reversal of 11439928571 is 17582993411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11439928571 - 2²⁶ = 11372819707 is a prime.

It is not a weakly prime, because it can be changed into another prime (11439928579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5719964285 + 5719964286.

It is an arithmetic number, because the mean of its divisors is an integer number (5719964286).

Almost surely, 2^11439928571 is an apocalyptic number.

11439928571 is a deficient number, since it is larger than the sum of its proper divisors (1).

11439928571 is an equidigital number, since it uses as much as digits as its factorization.

11439928571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 50.

The spelling of 11439928571 in words is "eleven billion, four hundred thirty-nine million, nine hundred twenty-eight thousand, five hundred seventy-one".