11471911519 has 2 divisors, whose sum is σ = 11471911520. Its totient is φ = 11471911518.

The previous prime is 11471911501. The next prime is 11471911537. The reversal of 11471911519 is 91511917411.

It is a balanced prime because it is at equal distance from previous prime (11471911501) and next prime (11471911537).

It is a cyclic number.

It is not a de Polignac number, because 11471911519 - 2⁵ = 11471911487 is a prime.

It is a super-2 number, since 2×11471911519² (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 (11471918519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5735955759 + 5735955760.

It is an arithmetic number, because the mean of its divisors is an integer number (5735955760).

Almost surely, 2^11471911519 is an apocalyptic number.

11471911519 is a deficient number, since it is larger than the sum of its proper divisors (1).

11471911519 is an equidigital number, since it uses as much as digits as its factorization.

11471911519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 40.

The spelling of 11471911519 in words is "eleven billion, four hundred seventy-one million, nine hundred eleven thousand, five hundred nineteen".