56306163391 has 2 divisors, whose sum is σ = 56306163392. Its totient is φ = 56306163390.

The previous prime is 56306163383. The next prime is 56306163401. The reversal of 56306163391 is 19336160365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56306163391 - 2³ = 56306163383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56306163791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28153081695 + 28153081696.

It is an arithmetic number, because the mean of its divisors is an integer number (28153081696).

Almost surely, 2^56306163391 is an apocalyptic number.

56306163391 is a deficient number, since it is larger than the sum of its proper divisors (1).

56306163391 is an equidigital number, since it uses as much as digits as its factorization.

56306163391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 262440, while the sum is 43.

The spelling of 56306163391 in words is "fifty-six billion, three hundred six million, one hundred sixty-three thousand, three hundred ninety-one".