55866995017 has 2 divisors, whose sum is σ = 55866995018. Its totient is φ = 55866995016.

The previous prime is 55866994969. The next prime is 55866995069. The reversal of 55866995017 is 71059966855.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46498884496 + 9368110521 = 215636^2 + 96789^2 .

It is a cyclic number.

It is not a de Polignac number, because 55866995017 - 2¹⁹ = 55866470729 is a prime.

It is a super-2 number, since 2×55866995017² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55866995417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27933497508 + 27933497509.

It is an arithmetic number, because the mean of its divisors is an integer number (27933497509).

Almost surely, 2^55866995017 is an apocalyptic number.

It is an amenable number.

55866995017 is a deficient number, since it is larger than the sum of its proper divisors (1).

55866995017 is an equidigital number, since it uses as much as digits as its factorization.

55866995017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412000, while the sum is 61.

The spelling of 55866995017 in words is "fifty-five billion, eight hundred sixty-six million, nine hundred ninety-five thousand, seventeen".