6563445205440 has 56 divisors (see below), whose sum is σ = 20838938530320. Its totient is φ = 1750252054528.

The previous prime is 6563445205399. The next prime is 6563445205459. The reversal of 6563445205440 is 445025443656.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 6563445205440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3418460085 + ... + 3418462004.

Almost surely, 2^{6563445205440} is an apocalyptic number.

6563445205440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6563445205440 is an abundant number, since it is smaller than the sum of its proper divisors (14275493324880).

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

6563445205440 is a wasteful number, since it uses less digits than its factorization.

6563445205440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6836922109 (or 6836922099 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 48.

The spelling of 6563445205440 in words is "six trillion, five hundred sixty-three billion, four hundred forty-five million, two hundred five thousand, four hundred forty".