56388978573673 has 2 divisors, whose sum is σ = 56388978573674. Its totient is φ = 56388978573672.

The previous prime is 56388978573623. The next prime is 56388978573703. The reversal of 56388978573673 is 37637587988365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38824899907369 + 17564078666304 = 6230963^2 + 4190952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56388978573673 is a prime.

It is not a weakly prime, because it can be changed into another prime (56388978573623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28194489286836 + 28194489286837.

It is an arithmetic number, because the mean of its divisors is an integer number (28194489286837).

Almost surely, 2^{56388978573673} is an apocalyptic number.

It is an amenable number.

56388978573673 is a deficient number, since it is larger than the sum of its proper divisors (1).

56388978573673 is an equidigital number, since it uses as much as digits as its factorization.

56388978573673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38407219200, while the sum is 85.

The spelling of 56388978573673 in words is "fifty-six trillion, three hundred eighty-eight billion, nine hundred seventy-eight million, five hundred seventy-three thousand, six hundred seventy-three".