11428657291 has 2 divisors, whose sum is σ = 11428657292. Its totient is φ = 11428657290.

The previous prime is 11428657237. The next prime is 11428657309. The reversal of 11428657291 is 19275682411.

11428657291 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 is a cyclic number.

It is not a de Polignac number, because 11428657291 - 2²¹ = 11426560139 is a prime.

It is a super-2 number, since 2×11428657291² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11428627291) 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, 5714328645 + 5714328646.

It is an arithmetic number, because the mean of its divisors is an integer number (5714328646).

Almost surely, 2^11428657291 is an apocalyptic number.

11428657291 is a deficient number, since it is larger than the sum of its proper divisors (1).

11428657291 is an equidigital number, since it uses as much as digits as its factorization.

11428657291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 46.

The spelling of 11428657291 in words is "eleven billion, four hundred twenty-eight million, six hundred fifty-seven thousand, two hundred ninety-one".