27403916265647 has 2 divisors, whose sum is σ = 27403916265648. Its totient is φ = 27403916265646.

The previous prime is 27403916265637. The next prime is 27403916265763. The reversal of 27403916265647 is 74656261930472.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27403916265647 - 2³⁸ = 27129038358703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27403916265647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27403916265637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13701958132823 + 13701958132824.

It is an arithmetic number, because the mean of its divisors is an integer number (13701958132824).

Almost surely, 2^{27403916265647} is an apocalyptic number.

27403916265647 is a deficient number, since it is larger than the sum of its proper divisors (1).

27403916265647 is an equidigital number, since it uses as much as digits as its factorization.

27403916265647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91445760, while the sum is 62.

The spelling of 27403916265647 in words is "twenty-seven trillion, four hundred three billion, nine hundred sixteen million, two hundred sixty-five thousand, six hundred forty-seven".