56126720773 has 2 divisors, whose sum is σ = 56126720774. Its totient is φ = 56126720772.

The previous prime is 56126720737. The next prime is 56126720779. The reversal of 56126720773 is 37702762165.

It is a happy number.

Together with previous prime (56126720737) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46960190209 + 9166530564 = 216703^2 + 95742^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56126720773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56126720779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28063360386 + 28063360387.

It is an arithmetic number, because the mean of its divisors is an integer number (28063360387).

Almost surely, 2^56126720773 is an apocalyptic number.

It is an amenable number.

56126720773 is a deficient number, since it is larger than the sum of its proper divisors (1).

56126720773 is an equidigital number, since it uses as much as digits as its factorization.

56126720773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 740880, while the sum is 46.

The spelling of 56126720773 in words is "fifty-six billion, one hundred twenty-six million, seven hundred twenty thousand, seven hundred seventy-three".