11712435857 has 2 divisors, whose sum is σ = 11712435858. Its totient is φ = 11712435856.

The previous prime is 11712435827. The next prime is 11712435863. The reversal of 11712435857 is 75853421711.

11712435857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11712434176 + 1681 = 108224^2 + 41^2 .

It is a cyclic number.

It is not a de Polignac number, because 11712435857 - 2²² = 11708241553 is a prime.

It is not a weakly prime, because it can be changed into another prime (11712435827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5856217928 + 5856217929.

It is an arithmetic number, because the mean of its divisors is an integer number (5856217929).

Almost surely, 2^11712435857 is an apocalyptic number.

It is an amenable number.

11712435857 is a deficient number, since it is larger than the sum of its proper divisors (1).

11712435857 is an equidigital number, since it uses as much as digits as its factorization.

11712435857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235200, while the sum is 44.

The spelling of 11712435857 in words is "eleven billion, seven hundred twelve million, four hundred thirty-five thousand, eight hundred fifty-seven".