27087863749 has 2 divisors, whose sum is σ = 27087863750. Its totient is φ = 27087863748.

The previous prime is 27087863713. The next prime is 27087863783. The reversal of 27087863749 is 94736878072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18956333124 + 8131530625 = 137682^2 + 90175^2 .

It is a cyclic number.

It is not a de Polignac number, because 27087863749 - 2¹⁵ = 27087830981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27087863249) 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, 13543931874 + 13543931875.

It is an arithmetic number, because the mean of its divisors is an integer number (13543931875).

Almost surely, 2^27087863749 is an apocalyptic number.

It is an amenable number.

27087863749 is a deficient number, since it is larger than the sum of its proper divisors (1).

27087863749 is an equidigital number, since it uses as much as digits as its factorization.

27087863749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28449792, while the sum is 61.

The spelling of 27087863749 in words is "twenty-seven billion, eighty-seven million, eight hundred sixty-three thousand, seven hundred forty-nine".