11457171919 has 2 divisors, whose sum is σ = 11457171920. Its totient is φ = 11457171918.

The previous prime is 11457171857. The next prime is 11457171959. The reversal of 11457171919 is 91917175411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11457171919 - 2¹⁵ = 11457139151 is a prime.

It is a super-2 number, since 2×11457171919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11457171959) 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, 5728585959 + 5728585960.

It is an arithmetic number, because the mean of its divisors is an integer number (5728585960).

Almost surely, 2^11457171919 is an apocalyptic number.

11457171919 is a deficient number, since it is larger than the sum of its proper divisors (1).

11457171919 is an equidigital number, since it uses as much as digits as its factorization.

11457171919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 46.

The spelling of 11457171919 in words is "eleven billion, four hundred fifty-seven million, one hundred seventy-one thousand, nine hundred nineteen".