27205315087 has 2 divisors, whose sum is σ = 27205315088. Its totient is φ = 27205315086.

The previous prime is 27205315063. The next prime is 27205315103. The reversal of 27205315087 is 78051350272.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27205315087 - 2¹⁵ = 27205282319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27205315057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13602657543 + 13602657544.

It is an arithmetic number, because the mean of its divisors is an integer number (13602657544).

Almost surely, 2^27205315087 is an apocalyptic number.

27205315087 is a deficient number, since it is larger than the sum of its proper divisors (1).

27205315087 is an equidigital number, since it uses as much as digits as its factorization.

27205315087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 27205315087 in words is "twenty-seven billion, two hundred five million, three hundred fifteen thousand, eighty-seven".