6489928299857 has 2 divisors, whose sum is σ = 6489928299858. Its totient is φ = 6489928299856.

The previous prime is 6489928299821. The next prime is 6489928299913. The reversal of 6489928299857 is 7589928299846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4122296758336 + 2367631541521 = 2030344^2 + 1538711^2 .

It is a cyclic number.

It is not a de Polignac number, because 6489928299857 - 2¹⁴ = 6489928283473 is a prime.

It is not a weakly prime, because it can be changed into another prime (6489928299817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3244964149928 + 3244964149929.

It is an arithmetic number, because the mean of its divisors is an integer number (3244964149929).

Almost surely, 2^{6489928299857} is an apocalyptic number.

It is an amenable number.

6489928299857 is a deficient number, since it is larger than the sum of its proper divisors (1).

6489928299857 is an equidigital number, since it uses as much as digits as its factorization.

6489928299857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11287019520, while the sum is 86.

The spelling of 6489928299857 in words is "six trillion, four hundred eighty-nine billion, nine hundred twenty-eight million, two hundred ninety-nine thousand, eight hundred fifty-seven".