6424640474736 has 80 divisors (see below), whose sum is σ = 18151412128128. Its totient is φ = 1941956755200.

The previous prime is 6424640474723. The next prime is 6424640474741. The reversal of 6424640474736 is 6374740464246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15115170 + ... + 15534401.

Almost surely, 2^{6424640474736} is an apocalyptic number.

6424640474736 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6424640474736 is an abundant number, since it is smaller than the sum of its proper divisors (11726771653392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6424640474736 is a wasteful number, since it uses less digits than its factorization.

6424640474736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30649990 (or 30649984 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 57.

The spelling of 6424640474736 in words is "six trillion, four hundred twenty-four billion, six hundred forty million, four hundred seventy-four thousand, seven hundred thirty-six".