27698410639 has 2 divisors, whose sum is σ = 27698410640. Its totient is φ = 27698410638.

The previous prime is 27698410601. The next prime is 27698410673. The reversal of 27698410639 is 93601489672.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27698410639 - 2⁹ = 27698410127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27698410639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27698410699) 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, 13849205319 + 13849205320.

It is an arithmetic number, because the mean of its divisors is an integer number (13849205320).

Almost surely, 2^27698410639 is an apocalyptic number.

27698410639 is a deficient number, since it is larger than the sum of its proper divisors (1).

27698410639 is an equidigital number, since it uses as much as digits as its factorization.

27698410639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 27698410639 in words is "twenty-seven billion, six hundred ninety-eight million, four hundred ten thousand, six hundred thirty-nine".