6413256064 has 16 divisors (see below), whose sum is σ = 12776408820. Its totient is φ = 3206627968.

The previous prime is 6413256049. The next prime is 6413256089. The reversal of 6413256064 is 4606523146.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×6413256064² = 82259706684865544192, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25051654 + ... + 25051909.

Almost surely, 2^6413256064 is an apocalyptic number.

6413256064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6413256064 is a deficient number, since it is larger than the sum of its proper divisors (6363152756).

6413256064 is an equidigital number, since it uses as much as digits as its factorization.

6413256064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50103577 (or 50103565 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 6413256064 is about 80082.8075431924. The cubic root of 6413256064 is about 1857.9165077465.

The spelling of 6413256064 in words is "six billion, four hundred thirteen million, two hundred fifty-six thousand, sixty-four".