27657877943 has 2 divisors, whose sum is σ = 27657877944. Its totient is φ = 27657877942.

The previous prime is 27657877837. The next prime is 27657878033. The reversal of 27657877943 is 34977875672.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27657877943 - 2¹⁴ = 27657861559 is a prime.

It is a super-2 number, since 2×27657877943² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27657877943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27657876943) 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 as a sum of consecutive naturals, namely, 13828938971 + 13828938972.

It is an arithmetic number, because the mean of its divisors is an integer number (13828938972).

Almost surely, 2^27657877943 is an apocalyptic number.

27657877943 is a deficient number, since it is larger than the sum of its proper divisors (1).

27657877943 is an equidigital number, since it uses as much as digits as its factorization.

27657877943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124467840, while the sum is 65.

The spelling of 27657877943 in words is "twenty-seven billion, six hundred fifty-seven million, eight hundred seventy-seven thousand, nine hundred forty-three".