55512650681 has 2 divisors, whose sum is σ = 55512650682. Its totient is φ = 55512650680.

The previous prime is 55512650653. The next prime is 55512650747. The reversal of 55512650681 is 18605621555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39158077456 + 16354573225 = 197884^2 + 127885^2 .

It is a cyclic number.

It is not a de Polignac number, because 55512650681 - 2⁶ = 55512650617 is a prime.

It is a super-2 number, since 2×55512650681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55512650651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27756325340 + 27756325341.

It is an arithmetic number, because the mean of its divisors is an integer number (27756325341).

Almost surely, 2^55512650681 is an apocalyptic number.

It is an amenable number.

55512650681 is a deficient number, since it is larger than the sum of its proper divisors (1).

55512650681 is an equidigital number, since it uses as much as digits as its factorization.

55512650681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360000, while the sum is 44.

The spelling of 55512650681 in words is "fifty-five billion, five hundred twelve million, six hundred fifty thousand, six hundred eighty-one".