27780278005003 has 4 divisors (see below), whose sum is σ = 27780497334928. Its totient is φ = 27780058675080.

The previous prime is 27780278005001. The next prime is 27780278005031. The reversal of 27780278005003 is 30050087208772.

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

It is a cyclic number.

It is not a de Polignac number, because 27780278005003 - 2¹ = 27780278005001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27780278005001) 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, 109474863 + ... + 109728328.

It is an arithmetic number, because the mean of its divisors is an integer number (6945124333732).

Almost surely, 2^{27780278005003} is an apocalyptic number.

27780278005003 is a deficient number, since it is larger than the sum of its proper divisors (219329925).

27780278005003 is a wasteful number, since it uses less digits than its factorization.

27780278005003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219329924.

The product of its (nonzero) digits is 1317120, while the sum is 49.

The spelling of 27780278005003 in words is "twenty-seven trillion, seven hundred eighty billion, two hundred seventy-eight million, five thousand, three".