56606330381 has 2 divisors, whose sum is σ = 56606330382. Its totient is φ = 56606330380.

The previous prime is 56606330371. The next prime is 56606330453. The reversal of 56606330381 is 18303360665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55079865481 + 1526464900 = 234691^2 + 39070^2 .

It is a cyclic number.

It is not a de Polignac number, because 56606330381 - 2¹⁰ = 56606329357 is a prime.

It is a super-2 number, since 2×56606330381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56606330311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28303165190 + 28303165191.

It is an arithmetic number, because the mean of its divisors is an integer number (28303165191).

Almost surely, 2^56606330381 is an apocalyptic number.

It is an amenable number.

56606330381 is a deficient number, since it is larger than the sum of its proper divisors (1).

56606330381 is an equidigital number, since it uses as much as digits as its factorization.

56606330381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 56606330381 in words is "fifty-six billion, six hundred six million, three hundred thirty thousand, three hundred eighty-one".