6563551120 has 40 divisors (see below), whose sum is σ = 17440294464. Its totient is φ = 2250360192.

The previous prime is 6563551109. The next prime is 6563551129. The reversal of 6563551120 is 211553656.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (6563551129) 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, 5859754 + ... + 5860873.

Almost surely, 2^6563551120 is an apocalyptic number.

It is an amenable number.

6563551120 is an abundant number, since it is smaller than the sum of its proper divisors (10876743344).

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

6563551120 is a wasteful number, since it uses less digits than its factorization.

6563551120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11720647 (or 11720641 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 6563551120 is about 81015.7461238246. The cubic root of 6563551120 is about 1872.3180496086.

The spelling of 6563551120 in words is "six billion, five hundred sixty-three million, five hundred fifty-one thousand, one hundred twenty".