11857418466431 has 4 divisors (see below), whose sum is σ = 12177889235832. Its totient is φ = 11536947697032.

The previous prime is 11857418466379. The next prime is 11857418466437. The reversal of 11857418466431 is 13466481475811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11857418466431 - 2¹⁰ = 11857418465407 is a prime.

It is a super-2 number, since 2×11857418466431² (a number of 27 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 (11857418466437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160235384645 + ... + 160235384718.

It is an arithmetic number, because the mean of its divisors is an integer number (3044472308958).

Almost surely, 2^{11857418466431} is an apocalyptic number.

11857418466431 is a deficient number, since it is larger than the sum of its proper divisors (320470769401).

11857418466431 is an equidigital number, since it uses as much as digits as its factorization.

11857418466431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320470769400.

The product of its digits is 15482880, while the sum is 59.

The spelling of 11857418466431 in words is "eleven trillion, eight hundred fifty-seven billion, four hundred eighteen million, four hundred sixty-six thousand, four hundred thirty-one".