2087366187449 has 2 divisors, whose sum is σ = 2087366187450. Its totient is φ = 2087366187448.

The previous prime is 2087366187299. The next prime is 2087366187461. The reversal of 2087366187449 is 9447816637802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1676100497449 + 411265690000 = 1294643^2 + 641300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2087366187449 is a prime.

It is not a weakly prime, because it can be changed into another prime (2087366187469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1043683093724 + 1043683093725.

It is an arithmetic number, because the mean of its divisors is an integer number (1043683093725).

Almost surely, 2^{2087366187449} is an apocalyptic number.

It is an amenable number.

2087366187449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2087366187449 is an equidigital number, since it uses as much as digits as its factorization.

2087366187449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97542144, while the sum is 65.

The spelling of 2087366187449 in words is "two trillion, eighty-seven billion, three hundred sixty-six million, one hundred eighty-seven thousand, four hundred forty-nine".