5663519665956 has 144 divisors (see below), whose sum is σ = 15131020369920. Its totient is φ = 1851877067040.

The previous prime is 5663519665933. The next prime is 5663519665957. The reversal of 5663519665956 is 6595669153665.

5663519665956 is a `hidden beast` number, since 5 + 6 + 6 + 3 + 519 + 6 + 6 + 59 + 56 = 666.

It is not an unprimeable number, because it can be changed into a prime (5663519665957) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15382701 + ... + 15746571.

Almost surely, 2^{5663519665956} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5663519665956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7565510184960).

5663519665956 is an abundant number, since it is smaller than the sum of its proper divisors (9467500703964).

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

5663519665956 is a wasteful number, since it uses less digits than its factorization.

5663519665956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364196 (or 364182 counting only the distinct ones).

The product of its digits is 1180980000, while the sum is 72.

The spelling of 5663519665956 in words is "five trillion, six hundred sixty-three billion, five hundred nineteen million, six hundred sixty-five thousand, nine hundred fifty-six".