55311569558789 has 2 divisors, whose sum is σ = 55311569558790. Its totient is φ = 55311569558788.

The previous prime is 55311569558759. The next prime is 55311569558831. The reversal of 55311569558789 is 98785596511355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38321262633889 + 16990306924900 = 6190417^2 + 4121930^2 .

It is a cyclic number.

It is not a de Polignac number, because 55311569558789 - 2⁴⁰ = 54212057931013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55311569558759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27655784779394 + 27655784779395.

It is an arithmetic number, because the mean of its divisors is an integer number (27655784779395).

Almost surely, 2^{55311569558789} is an apocalyptic number.

It is an amenable number.

55311569558789 is a deficient number, since it is larger than the sum of its proper divisors (1).

55311569558789 is an equidigital number, since it uses as much as digits as its factorization.

55311569558789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2041200000, while the sum is 77.

The spelling of 55311569558789 in words is "fifty-five trillion, three hundred eleven billion, five hundred sixty-nine million, five hundred fifty-eight thousand, seven hundred eighty-nine".