55005005499869 has 2 divisors, whose sum is σ = 55005005499870. Its totient is φ = 55005005499868.

The previous prime is 55005005499863. The next prime is 55005005500019. The reversal of 55005005499869 is 96899450050055.

55005005499869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36323981655844 + 18681023844025 = 6026938^2 + 4322155^2 .

It is a cyclic number.

It is not a de Polignac number, because 55005005499869 - 2¹² = 55005005495773 is a prime.

It is a super-2 number, since 2×55005005499869² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55005005499863) 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, 27502502749934 + 27502502749935.

It is an arithmetic number, because the mean of its divisors is an integer number (27502502749935).

Almost surely, 2^{55005005499869} is an apocalyptic number.

It is an amenable number.

55005005499869 is a deficient number, since it is larger than the sum of its proper divisors (1).

55005005499869 is an equidigital number, since it uses as much as digits as its factorization.

55005005499869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480000, while the sum is 65.

The spelling of 55005005499869 in words is "fifty-five trillion, five billion, five million, four hundred ninety-nine thousand, eight hundred sixty-nine".