55566596887 has 2 divisors, whose sum is σ = 55566596888. Its totient is φ = 55566596886.

The previous prime is 55566596879. The next prime is 55566596923. The reversal of 55566596887 is 78869566555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55566596887 - 2³ = 55566596879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55566596857) 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, 27783298443 + 27783298444.

It is an arithmetic number, because the mean of its divisors is an integer number (27783298444).

Almost surely, 2^55566596887 is an apocalyptic number.

55566596887 is a deficient number, since it is larger than the sum of its proper divisors (1).

55566596887 is an equidigital number, since it uses as much as digits as its factorization.

55566596887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320000, while the sum is 70.

The spelling of 55566596887 in words is "fifty-five billion, five hundred sixty-six million, five hundred ninety-six thousand, eight hundred eighty-seven".