6448645020063 has 16 divisors (see below), whose sum is σ = 9051632392320. Its totient is φ = 4072422290976.

The previous prime is 6448645020047. The next prime is 6448645020089. The reversal of 6448645020063 is 3600205468446.

It is not a de Polignac number, because 6448645020063 - 2⁴ = 6448645020047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6448645019994 and 6448645020021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448645020263) 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, 5063745 + ... + 6207962.

It is an arithmetic number, because the mean of its divisors is an integer number (565727024520).

Almost surely, 2^{6448645020063} is an apocalyptic number.

6448645020063 is a deficient number, since it is larger than the sum of its proper divisors (2602987372257).

6448645020063 is a wasteful number, since it uses less digits than its factorization.

6448645020063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11281766.

The product of its (nonzero) digits is 3317760, while the sum is 48.

The spelling of 6448645020063 in words is "six trillion, four hundred forty-eight billion, six hundred forty-five million, twenty thousand, sixty-three".