55585456057819 has 2 divisors, whose sum is σ = 55585456057820. Its totient is φ = 55585456057818.

The previous prime is 55585456057787. The next prime is 55585456057823. The reversal of 55585456057819 is 91875065458555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55585456057819 - 2⁵ = 55585456057787 is a prime.

It is a super-2 number, since 2×55585456057819² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55585456057829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27792728028909 + 27792728028910.

It is an arithmetic number, because the mean of its divisors is an integer number (27792728028910).

Almost surely, 2^{55585456057819} is an apocalyptic number.

55585456057819 is a deficient number, since it is larger than the sum of its proper divisors (1).

55585456057819 is an equidigital number, since it uses as much as digits as its factorization.

55585456057819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512000000, while the sum is 73.

The spelling of 55585456057819 in words is "fifty-five trillion, five hundred eighty-five billion, four hundred fifty-six million, fifty-seven thousand, eight hundred nineteen".