11857415423543 has 8 divisors (see below), whose sum is σ = 11984881491408. Its totient is φ = 11730055981824.

The previous prime is 11857415423459. The next prime is 11857415423573. The reversal of 11857415423543 is 34532451475811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11857415423543 - 2³⁰ = 11856341681719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11857415423573) 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 in 7 ways as a sum of consecutive naturals, for example, 26432921 + ... + 26877762.

It is an arithmetic number, because the mean of its divisors is an integer number (1498110186426).

Almost surely, 2^{11857415423543} is an apocalyptic number.

11857415423543 is a deficient number, since it is larger than the sum of its proper divisors (127466067865).

11857415423543 is an equidigital number, since it uses as much as digits as its factorization.

11857415423543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53313073.

The product of its digits is 8064000, while the sum is 53.

The spelling of 11857415423543 in words is "eleven trillion, eight hundred fifty-seven billion, four hundred fifteen million, four hundred twenty-three thousand, five hundred forty-three".