56478616349 has 2 divisors, whose sum is σ = 56478616350. Its totient is φ = 56478616348.

The previous prime is 56478616339. The next prime is 56478616351. The reversal of 56478616349 is 94361687465.

56478616349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55321392025 + 1157224324 = 235205^2 + 34018^2 .

It is a cyclic number.

It is not a de Polignac number, because 56478616349 - 2¹⁶ = 56478550813 is a prime.

Together with 56478616351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56478616339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28239308174 + 28239308175.

It is an arithmetic number, because the mean of its divisors is an integer number (28239308175).

Almost surely, 2^56478616349 is an apocalyptic number.

It is an amenable number.

56478616349 is a deficient number, since it is larger than the sum of its proper divisors (1).

56478616349 is an equidigital number, since it uses as much as digits as its factorization.

56478616349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 59.

The spelling of 56478616349 in words is "fifty-six billion, four hundred seventy-eight million, six hundred sixteen thousand, three hundred forty-nine".