27868749407 has 2 divisors, whose sum is σ = 27868749408. Its totient is φ = 27868749406.

The previous prime is 27868749379. The next prime is 27868749421. The reversal of 27868749407 is 70494786872.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27868749407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27868749407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27868749437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13934374703 + 13934374704.

It is an arithmetic number, because the mean of its divisors is an integer number (13934374704).

Almost surely, 2^27868749407 is an apocalyptic number.

27868749407 is a deficient number, since it is larger than the sum of its proper divisors (1).

27868749407 is an equidigital number, since it uses as much as digits as its factorization.

27868749407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37933056, while the sum is 62.

The spelling of 27868749407 in words is "twenty-seven billion, eight hundred sixty-eight million, seven hundred forty-nine thousand, four hundred seven".