27400856143 has 4 divisors (see below), whose sum is σ = 27850050568. Its totient is φ = 26951661720.

The previous prime is 27400856111. The next prime is 27400856177. The reversal of 27400856143 is 34165800472.

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

It is not a de Polignac number, because 27400856143 - 2⁵ = 27400856111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27400856096 and 27400856105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27400856543) 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 3 ways as a sum of consecutive naturals, for example, 224597121 + ... + 224597242.

It is an arithmetic number, because the mean of its divisors is an integer number (6962512642).

Almost surely, 2^27400856143 is an apocalyptic number.

27400856143 is a deficient number, since it is larger than the sum of its proper divisors (449194425).

27400856143 is an equidigital number, since it uses as much as digits as its factorization.

27400856143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449194424.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 27400856143 in words is "twenty-seven billion, four hundred million, eight hundred fifty-six thousand, one hundred forty-three".