11543185919 has 16 divisors (see below), whose sum is σ = 12341086080. Its totient is φ = 10764563040.

The previous prime is 11543185873. The next prime is 11543185987. The reversal of 11543185919 is 91958134511.

11543185919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11543185919 - 2²⁸ = 11274750463 is a prime.

It is a super-2 number, since 2×11543185919² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543185019) 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 in 15 ways as a sum of consecutive naturals, for example, 2458364 + ... + 2463054.

It is an arithmetic number, because the mean of its divisors is an integer number (771317880).

Almost surely, 2^11543185919 is an apocalyptic number.

11543185919 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11543185919 is a deficient number, since it is larger than the sum of its proper divisors (797900161).

11543185919 is a wasteful number, since it uses less digits than its factorization.

11543185919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710.

The product of its digits is 194400, while the sum is 47.

The spelling of 11543185919 in words is "eleven billion, five hundred forty-three million, one hundred eighty-five thousand, nine hundred nineteen".