27778002555005 has 4 divisors (see below), whose sum is σ = 33333603066012. Its totient is φ = 22222402044000.

The previous prime is 27778002554989. The next prime is 27778002555011. The reversal of 27778002555005 is 50055520087772.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11083113215161 + 16694889339844 = 3329131^2 + 4085938^2 .

It is not a de Polignac number, because 27778002555005 - 2⁴ = 27778002554989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2777800255496 + ... + 2777800255505.

It is an arithmetic number, because the mean of its divisors is an integer number (8333400766503).

Almost surely, 2^{27778002555005} is an apocalyptic number.

It is an amenable number.

27778002555005 is a deficient number, since it is larger than the sum of its proper divisors (5555600511007).

27778002555005 is an equidigital number, since it uses as much as digits as its factorization.

27778002555005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555600511006.

The product of its (nonzero) digits is 6860000, while the sum is 53.

The spelling of 27778002555005 in words is "twenty-seven trillion, seven hundred seventy-eight billion, two million, five hundred fifty-five thousand, five".