6489794716405 has 64 divisors (see below), whose sum is σ = 10599522006528. Its totient is φ = 3683231170560.

The previous prime is 6489794716351. The next prime is 6489794716439. The reversal of 6489794716405 is 5046174979846.

It is not a de Polignac number, because 6489794716405 - 2⁷ = 6489794716277 is a prime.

It is a super-2 number, since 2×6489794716405² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8515884 + ... + 9246613.

It is an arithmetic number, because the mean of its divisors is an integer number (165617531352).

Almost surely, 2^{6489794716405} is an apocalyptic number.

6489794716405 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6489794716405 is a deficient number, since it is larger than the sum of its proper divisors (4109727290123).

6489794716405 is a wasteful number, since it uses less digits than its factorization.

6489794716405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17762606.

The product of its (nonzero) digits is 365783040, while the sum is 70.

The spelling of 6489794716405 in words is "six trillion, four hundred eighty-nine billion, seven hundred ninety-four million, seven hundred sixteen thousand, four hundred five".