11539137791 has 2 divisors, whose sum is σ = 11539137792. Its totient is φ = 11539137790.

The previous prime is 11539137769. The next prime is 11539137829. The reversal of 11539137791 is 19773193511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11539137791 - 2²² = 11534943487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11539137761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5769568895 + 5769568896.

It is an arithmetic number, because the mean of its divisors is an integer number (5769568896).

Almost surely, 2^11539137791 is an apocalyptic number.

11539137791 is a deficient number, since it is larger than the sum of its proper divisors (1).

11539137791 is an equidigital number, since it uses as much as digits as its factorization.

11539137791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 178605, while the sum is 47.

The spelling of 11539137791 in words is "eleven billion, five hundred thirty-nine million, one hundred thirty-seven thousand, seven hundred ninety-one".