5687938397849 has 2 divisors, whose sum is σ = 5687938397850. Its totient is φ = 5687938397848.

The previous prime is 5687938397839. The next prime is 5687938397927. The reversal of 5687938397849 is 9487938397865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4937017363600 + 750921034249 = 2221940^2 + 866557^2 .

It is a cyclic number.

It is not a de Polignac number, because 5687938397849 - 2⁴⁰ = 4588426770073 is a prime.

It is not a weakly prime, because it can be changed into another prime (5687938397819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2843969198924 + 2843969198925.

It is an arithmetic number, because the mean of its divisors is an integer number (2843969198925).

Almost surely, 2^{5687938397849} is an apocalyptic number.

It is an amenable number.

5687938397849 is a deficient number, since it is larger than the sum of its proper divisors (1).

5687938397849 is an equidigital number, since it uses as much as digits as its factorization.

5687938397849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19752284160, while the sum is 86.

The spelling of 5687938397849 in words is "five trillion, six hundred eighty-seven billion, nine hundred thirty-eight million, three hundred ninety-seven thousand, eight hundred forty-nine".