56387936321 has 2 divisors, whose sum is σ = 56387936322. Its totient is φ = 56387936320.

The previous prime is 56387936309. The next prime is 56387936333. The reversal of 56387936321 is 12363978365.

It is a balanced prime because it is at equal distance from previous prime (56387936309) and next prime (56387936333).

It can be written as a sum of positive squares in only one way, i.e., 38549395600 + 17838540721 = 196340^2 + 133561^2 .

It is a cyclic number.

It is not a de Polignac number, because 56387936321 - 2⁶ = 56387936257 is a prime.

It is not a weakly prime, because it can be changed into another prime (56387936621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28193968160 + 28193968161.

It is an arithmetic number, because the mean of its divisors is an integer number (28193968161).

Almost surely, 2^56387936321 is an apocalyptic number.

It is an amenable number.

56387936321 is a deficient number, since it is larger than the sum of its proper divisors (1).

56387936321 is an equidigital number, since it uses as much as digits as its factorization.

56387936321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 53.

The spelling of 56387936321 in words is "fifty-six billion, three hundred eighty-seven million, nine hundred thirty-six thousand, three hundred twenty-one".