8387986263049 has 2 divisors, whose sum is σ = 8387986263050. Its totient is φ = 8387986263048.

The previous prime is 8387986263043. The next prime is 8387986263109. The reversal of 8387986263049 is 9403626897838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7600938720400 + 787047542649 = 2756980^2 + 887157^2 .

It is a cyclic number.

It is not a de Polignac number, because 8387986263049 - 2³¹ = 8385838779401 is a prime.

It is not a weakly prime, because it can be changed into another prime (8387986263043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4193993131524 + 4193993131525.

It is an arithmetic number, because the mean of its divisors is an integer number (4193993131525).

Almost surely, 2^{8387986263049} is an apocalyptic number.

It is an amenable number.

8387986263049 is a deficient number, since it is larger than the sum of its proper divisors (1).

8387986263049 is an equidigital number, since it uses as much as digits as its factorization.

8387986263049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 752467968, while the sum is 73.

The spelling of 8387986263049 in words is "eight trillion, three hundred eighty-seven billion, nine hundred eighty-six million, two hundred sixty-three thousand, forty-nine".