56316395549 has 2 divisors, whose sum is σ = 56316395550. Its totient is φ = 56316395548.

The previous prime is 56316395501. The next prime is 56316395557. The reversal of 56316395549 is 94559361365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51694843225 + 4621552324 = 227365^2 + 67982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56316395549 is a prime.

It is a super-2 number, since 2×56316395549² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56316395494 and 56316395503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56316395249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28158197774 + 28158197775.

It is an arithmetic number, because the mean of its divisors is an integer number (28158197775).

Almost surely, 2^56316395549 is an apocalyptic number.

It is an amenable number.

56316395549 is a deficient number, since it is larger than the sum of its proper divisors (1).

56316395549 is an equidigital number, since it uses as much as digits as its factorization.

56316395549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13122000, while the sum is 56.

The spelling of 56316395549 in words is "fifty-six billion, three hundred sixteen million, three hundred ninety-five thousand, five hundred forty-nine".