56811373037 has 2 divisors, whose sum is σ = 56811373038. Its totient is φ = 56811373036.

The previous prime is 56811372991. The next prime is 56811373043. The reversal of 56811373037 is 73037311865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41561345956 + 15250027081 = 203866^2 + 123491^2 .

It is a cyclic number.

It is not a de Polignac number, because 56811373037 - 2⁸ = 56811372781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56811373097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28405686518 + 28405686519.

It is an arithmetic number, because the mean of its divisors is an integer number (28405686519).

Almost surely, 2^56811373037 is an apocalyptic number.

It is an amenable number.

56811373037 is a deficient number, since it is larger than the sum of its proper divisors (1).

56811373037 is an equidigital number, since it uses as much as digits as its factorization.

56811373037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 56811373037 in words is "fifty-six billion, eight hundred eleven million, three hundred seventy-three thousand, thirty-seven".