55005866494439 has 4 divisors (see below), whose sum is σ = 62863847422224. Its totient is φ = 47147885566656.

The previous prime is 55005866494427. The next prime is 55005866494457. The reversal of 55005866494439 is 93449466850055.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55005866494439 - 2²⁴ = 55005849717223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a 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 in 3 ways as a sum of consecutive naturals, for example, 3928990463882 + ... + 3928990463895.

It is an arithmetic number, because the mean of its divisors is an integer number (15715961855556).

Almost surely, 2^{55005866494439} is an apocalyptic number.

55005866494439 is a deficient number, since it is larger than the sum of its proper divisors (7857980927785).

55005866494439 is an equidigital number, since it uses as much as digits as its factorization.

55005866494439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7857980927784.

The product of its (nonzero) digits is 559872000, while the sum is 68.

The spelling of 55005866494439 in words is "fifty-five trillion, five billion, eight hundred sixty-six million, four hundred ninety-four thousand, four hundred thirty-nine".