11421235957 has 2 divisors, whose sum is σ = 11421235958. Its totient is φ = 11421235956.

The previous prime is 11421235937. The next prime is 11421235979. The reversal of 11421235957 is 75953212411.

11421235957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5796385956 + 5624850001 = 76134^2 + 74999^2 .

It is a cyclic number.

It is not a de Polignac number, because 11421235957 - 2⁷ = 11421235829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11421235927) 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, 5710617978 + 5710617979.

It is an arithmetic number, because the mean of its divisors is an integer number (5710617979).

Almost surely, 2^11421235957 is an apocalyptic number.

It is an amenable number.

11421235957 is a deficient number, since it is larger than the sum of its proper divisors (1).

11421235957 is an equidigital number, since it uses as much as digits as its factorization.

11421235957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 40.

The spelling of 11421235957 in words is "eleven billion, four hundred twenty-one million, two hundred thirty-five thousand, nine hundred fifty-seven".