6447283603215 has 64 divisors (see below), whose sum is σ = 13039329601536. Its totient is φ = 2647081907712.

The previous prime is 6447283603171. The next prime is 6447283603253. The reversal of 6447283603215 is 5123063827446.

It is not a de Polignac number, because 6447283603215 - 2⁶ = 6447283603151 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 63777667 + ... + 63878676.

It is an arithmetic number, because the mean of its divisors is an integer number (203739525024).

Almost surely, 2^{6447283603215} is an apocalyptic number.

6447283603215 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6447283603215 is an abundant number, since it is smaller than the sum of its proper divisors (6592045998321).

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

6447283603215 is a wasteful number, since it uses less digits than its factorization.

6447283603215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127656408.

The product of its (nonzero) digits is 5806080, while the sum is 51.

The spelling of 6447283603215 in words is "six trillion, four hundred forty-seven billion, two hundred eighty-three million, six hundred three thousand, two hundred fifteen".