27942799943 has 2 divisors, whose sum is σ = 27942799944. Its totient is φ = 27942799942.

The previous prime is 27942799919. The next prime is 27942799979. The reversal of 27942799943 is 34999724972.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27942799943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27942799943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27942796943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13971399971 + 13971399972.

It is an arithmetic number, because the mean of its divisors is an integer number (13971399972).

Almost surely, 2^27942799943 is an apocalyptic number.

27942799943 is a deficient number, since it is larger than the sum of its proper divisors (1).

27942799943 is an equidigital number, since it uses as much as digits as its factorization.

27942799943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61725888, while the sum is 65.

The spelling of 27942799943 in words is "twenty-seven billion, nine hundred forty-two million, seven hundred ninety-nine thousand, nine hundred forty-three".