11444191357 has 2 divisors, whose sum is σ = 11444191358. Its totient is φ = 11444191356.

The previous prime is 11444191331. The next prime is 11444191387. The reversal of 11444191357 is 75319144411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11014292601 + 429898756 = 104949^2 + 20734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11444191357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11444191307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5722095678 + 5722095679.

It is an arithmetic number, because the mean of its divisors is an integer number (5722095679).

Almost surely, 2^11444191357 is an apocalyptic number.

It is an amenable number.

11444191357 is a deficient number, since it is larger than the sum of its proper divisors (1).

11444191357 is an equidigital number, since it uses as much as digits as its factorization.

11444191357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The spelling of 11444191357 in words is "eleven billion, four hundred forty-four million, one hundred ninety-one thousand, three hundred fifty-seven".