6406820082464 has 24 divisors (see below), whose sum is σ = 12615975001728. Its totient is φ = 3202762939200.

The previous prime is 6406820082463. The next prime is 6406820082511. The reversal of 6406820082464 is 4642800286046.

It is a super-2 number, since 2×6406820082464² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6406820082463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20061032 + ... + 20377895.

It is an arithmetic number, because the mean of its divisors is an integer number (525665625072).

Almost surely, 2^{6406820082464} is an apocalyptic number.

It is an amenable number.

6406820082464 is a deficient number, since it is larger than the sum of its proper divisors (6209154919264).

6406820082464 is a wasteful number, since it uses less digits than its factorization.

6406820082464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40443888 (or 40443880 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 50.

The spelling of 6406820082464 in words is "six trillion, four hundred six billion, eight hundred twenty million, eighty-two thousand, four hundred sixty-four".