6421330516 has 24 divisors (see below), whose sum is σ = 11832156000. Its totient is φ = 3040811424.

The previous prime is 6421330511. The next prime is 6421330541. The reversal of 6421330516 is 6150331246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6421330511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311415 + ... + 331393.

It is an arithmetic number, because the mean of its divisors is an integer number (493006500).

Almost surely, 2^6421330516 is an apocalyptic number.

It is an amenable number.

6421330516 is a deficient number, since it is larger than the sum of its proper divisors (5410825484).

6421330516 is a wasteful number, since it uses less digits than its factorization.

6421330516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24231 (or 24229 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 6421330516 is about 80133.2048279613. The cubic root of 6421330516 is about 1858.6959020765.

The spelling of 6421330516 in words is "six billion, four hundred twenty-one million, three hundred thirty thousand, five hundred sixteen".