6408580993 has 2 divisors, whose sum is σ = 6408580994. Its totient is φ = 6408580992.

The previous prime is 6408580991. The next prime is 6408581009. The reversal of 6408580993 is 3990858046.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5345364544 + 1063216449 = 73112^2 + 32607^2 .

It is a cyclic number.

It is not a de Polignac number, because 6408580993 - 2¹ = 6408580991 is a prime.

Together with 6408580991, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6408580993.

It is not a weakly prime, because it can be changed into another prime (6408580991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3204290496 + 3204290497.

It is an arithmetic number, because the mean of its divisors is an integer number (3204290497).

Almost surely, 2^6408580993 is an apocalyptic number.

It is an amenable number.

6408580993 is a deficient number, since it is larger than the sum of its proper divisors (1).

6408580993 is an equidigital number, since it uses as much as digits as its factorization.

6408580993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The square root of 6408580993 is about 80053.6132413772. The cubic root of 6408580993 is about 1857.4649428971.

The spelling of 6408580993 in words is "six billion, four hundred eight million, five hundred eighty thousand, nine hundred ninety-three".