27578346878587 has 2 divisors, whose sum is σ = 27578346878588. Its totient is φ = 27578346878586.

The previous prime is 27578346878477. The next prime is 27578346878609. The reversal of 27578346878587 is 78587864387572.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27578346878587 is a prime.

It is a super-2 number, since 2×27578346878587² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27578346870587) 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, 13789173439293 + 13789173439294.

It is an arithmetic number, because the mean of its divisors is an integer number (13789173439294).

Almost surely, 2^{27578346878587} is an apocalyptic number.

27578346878587 is a deficient number, since it is larger than the sum of its proper divisors (1).

27578346878587 is an equidigital number, since it uses as much as digits as its factorization.

27578346878587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35404185600, while the sum is 85.

The spelling of 27578346878587 in words is "twenty-seven trillion, five hundred seventy-eight billion, three hundred forty-six million, eight hundred seventy-eight thousand, five hundred eighty-seven".