6218406516464 has 80 divisors (see below), whose sum is σ = 12239265494016. Its totient is φ = 3060304800000.

The previous prime is 6218406516463. The next prime is 6218406516493. The reversal of 6218406516464 is 4646156048126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6218406516463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253272989 + ... + 253297539.

Almost surely, 2^{6218406516464} is an apocalyptic number.

It is an amenable number.

6218406516464 is a deficient number, since it is larger than the sum of its proper divisors (6020858977552).

6218406516464 is a wasteful number, since it uses less digits than its factorization.

6218406516464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25614 (or 25608 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 53.

The spelling of 6218406516464 in words is "six trillion, two hundred eighteen billion, four hundred six million, five hundred sixteen thousand, four hundred sixty-four".