11557742327 has 2 divisors, whose sum is σ = 11557742328. Its totient is φ = 11557742326.

The previous prime is 11557742323. The next prime is 11557742363. The reversal of 11557742327 is 72324775511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11557742327 - 2² = 11557742323 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11557742321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5778871163 + 5778871164.

It is an arithmetic number, because the mean of its divisors is an integer number (5778871164).

Almost surely, 2^11557742327 is an apocalyptic number.

11557742327 is a deficient number, since it is larger than the sum of its proper divisors (1).

11557742327 is an equidigital number, since it uses as much as digits as its factorization.

11557742327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 411600, while the sum is 44.

The spelling of 11557742327 in words is "eleven billion, five hundred fifty-seven million, seven hundred forty-two thousand, three hundred twenty-seven".