55663104321 has 24 divisors (see below), whose sum is σ = 87901894080. Its totient is φ = 33662008800.

The previous prime is 55663104317. The next prime is 55663104323. The reversal of 55663104321 is 12340136655.

55663104321 is a `hidden beast` number, since 5 + 566 + 31 + 0 + 43 + 21 = 666.

55663104321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55663104321 - 2² = 55663104317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55663104323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 564181 + ... + 655458.

It is an arithmetic number, because the mean of its divisors is an integer number (3662578920).

Almost surely, 2^55663104321 is an apocalyptic number.

It is an amenable number.

55663104321 is a deficient number, since it is larger than the sum of its proper divisors (32238789759).

55663104321 is a wasteful number, since it uses less digits than its factorization.

55663104321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220117 (or 1220114 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 55663104321 in words is "fifty-five billion, six hundred sixty-three million, one hundred four thousand, three hundred twenty-one".