27878495960573 has 2 divisors, whose sum is σ = 27878495960574. Its totient is φ = 27878495960572.

The previous prime is 27878495960407. The next prime is 27878495960611. The reversal of 27878495960573 is 37506959487872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18471927218404 + 9406568742169 = 4297898^2 + 3067013^2 .

It is a cyclic number.

It is not a de Polignac number, because 27878495960573 - 2¹⁸ = 27878495698429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27878495968573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13939247980286 + 13939247980287.

It is an arithmetic number, because the mean of its divisors is an integer number (13939247980287).

Almost surely, 2^{27878495960573} is an apocalyptic number.

It is an amenable number.

27878495960573 is a deficient number, since it is larger than the sum of its proper divisors (1).

27878495960573 is an equidigital number, since it uses as much as digits as its factorization.

27878495960573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6401203200, while the sum is 80.

The spelling of 27878495960573 in words is "twenty-seven trillion, eight hundred seventy-eight billion, four hundred ninety-five million, nine hundred sixty thousand, five hundred seventy-three".