55681065757 has 2 divisors, whose sum is σ = 55681065758. Its totient is φ = 55681065756.

The previous prime is 55681065709. The next prime is 55681065793. The reversal of 55681065757 is 75756018655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45122681241 + 10558384516 = 212421^2 + 102754^2 .

It is a cyclic number.

It is not a de Polignac number, because 55681065757 - 2¹⁵ = 55681032989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55681065698 and 55681065707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55681075757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27840532878 + 27840532879.

It is an arithmetic number, because the mean of its divisors is an integer number (27840532879).

Almost surely, 2^55681065757 is an apocalyptic number.

It is an amenable number.

55681065757 is a deficient number, since it is larger than the sum of its proper divisors (1).

55681065757 is an equidigital number, since it uses as much as digits as its factorization.

55681065757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820000, while the sum is 55.

The spelling of 55681065757 in words is "fifty-five billion, six hundred eighty-one million, sixty-five thousand, seven hundred fifty-seven".