55005866494457 has 2 divisors, whose sum is σ = 55005866494458. Its totient is φ = 55005866494456.

The previous prime is 55005866494427. The next prime is 55005866494459. The reversal of 55005866494457 is 75449466850055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36431654226496 + 18574212267961 = 6035864^2 + 4309781^2 .

It is a cyclic number.

It is not a de Polignac number, because 55005866494457 - 2¹⁰ = 55005866493433 is a prime.

Together with 55005866494459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55005866494459) 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, 27502933247228 + 27502933247229.

It is an arithmetic number, because the mean of its divisors is an integer number (27502933247229).

Almost surely, 2^{55005866494457} is an apocalyptic number.

It is an amenable number.

55005866494457 is a deficient number, since it is larger than the sum of its proper divisors (1).

55005866494457 is an equidigital number, since it uses as much as digits as its factorization.

55005866494457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760000, while the sum is 68.

The spelling of 55005866494457 in words is "fifty-five trillion, five billion, eight hundred sixty-six million, four hundred ninety-four thousand, four hundred fifty-seven".