27878394059227 has 2 divisors, whose sum is σ = 27878394059228. Its totient is φ = 27878394059226.

The previous prime is 27878394059119. The next prime is 27878394059287. The reversal of 27878394059227 is 72295049387872.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27878394059227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27878394059227.

It is not a weakly prime, because it can be changed into another prime (27878394059287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13939197029613 + 13939197029614.

It is an arithmetic number, because the mean of its divisors is an integer number (13939197029614).

Almost surely, 2^{27878394059227} is an apocalyptic number.

27878394059227 is a deficient number, since it is larger than the sum of its proper divisors (1).

27878394059227 is an equidigital number, since it uses as much as digits as its factorization.

27878394059227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 853493760, while the sum is 73.

The spelling of 27878394059227 in words is "twenty-seven trillion, eight hundred seventy-eight billion, three hundred ninety-four million, fifty-nine thousand, two hundred twenty-seven".