56221763159 has 2 divisors, whose sum is σ = 56221763160. Its totient is φ = 56221763158.

The previous prime is 56221763137. The next prime is 56221763261. The reversal of 56221763159 is 95136712265.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56221763159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56221763359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28110881579 + 28110881580.

It is an arithmetic number, because the mean of its divisors is an integer number (28110881580).

Almost surely, 2^56221763159 is an apocalyptic number.

56221763159 is a deficient number, since it is larger than the sum of its proper divisors (1).

56221763159 is an equidigital number, since it uses as much as digits as its factorization.

56221763159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 47.

The spelling of 56221763159 in words is "fifty-six billion, two hundred twenty-one million, seven hundred sixty-three thousand, one hundred fifty-nine".