56330645621 has 2 divisors, whose sum is σ = 56330645622. Its totient is φ = 56330645620.

The previous prime is 56330645603. The next prime is 56330645641. The reversal of 56330645621 is 12654603365.

56330645621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56282343121 + 48302500 = 237239^2 + 6950^2 .

It is a cyclic number.

It is not a de Polignac number, because 56330645621 - 2¹⁴ = 56330629237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56330645641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28165322810 + 28165322811.

It is an arithmetic number, because the mean of its divisors is an integer number (28165322811).

Almost surely, 2^56330645621 is an apocalyptic number.

It is an amenable number.

56330645621 is a deficient number, since it is larger than the sum of its proper divisors (1).

56330645621 is an equidigital number, since it uses as much as digits as its factorization.

56330645621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 56330645621 in words is "fifty-six billion, three hundred thirty million, six hundred forty-five thousand, six hundred twenty-one".