56194878893 has 2 divisors, whose sum is σ = 56194878894. Its totient is φ = 56194878892.

The previous prime is 56194878877. The next prime is 56194878917. The reversal of 56194878893 is 39887849165.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41549522569 + 14645356324 = 203837^2 + 121018^2 .

It is a cyclic number.

It is not a de Polignac number, because 56194878893 - 2⁴ = 56194878877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56194878863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28097439446 + 28097439447.

It is an arithmetic number, because the mean of its divisors is an integer number (28097439447).

Almost surely, 2^56194878893 is an apocalyptic number.

It is an amenable number.

56194878893 is a deficient number, since it is larger than the sum of its proper divisors (1).

56194878893 is an equidigital number, since it uses as much as digits as its factorization.

56194878893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104509440, while the sum is 68.

The spelling of 56194878893 in words is "fifty-six billion, one hundred ninety-four million, eight hundred seventy-eight thousand, eight hundred ninety-three".