56564556454221 has 8 divisors (see below), whose sum is σ = 75419524253760. Its totient is φ = 37709646478752.

The previous prime is 56564556454187. The next prime is 56564556454249. The reversal of 56564556454221 is 12245465546565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56564556454221 - 2⁶ = 56564556454157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56564556414221) 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, 12119560 + ... + 16124913.

It is an arithmetic number, because the mean of its divisors is an integer number (9427440531720).

Almost surely, 2^{56564556454221} is an apocalyptic number.

It is an amenable number.

56564556454221 is a deficient number, since it is larger than the sum of its proper divisors (18854967799539).

56564556454221 is a wasteful number, since it uses less digits than its factorization.

56564556454221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28912035.

The product of its digits is 172800000, while the sum is 60.

The spelling of 56564556454221 in words is "fifty-six trillion, five hundred sixty-four billion, five hundred fifty-six million, four hundred fifty-four thousand, two hundred twenty-one".