27808361378 has 16 divisors (see below), whose sum is σ = 47956938624. Its totient is φ = 11846503680.

The previous prime is 27808361353. The next prime is 27808361387. The reversal of 27808361378 is 87316380872.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5944703 + ... + 5949378.

It is an arithmetic number, because the mean of its divisors is an integer number (2997308664).

Almost surely, 2^27808361378 is an apocalyptic number.

27808361378 is a deficient number, since it is larger than the sum of its proper divisors (20148577246).

27808361378 is a wasteful number, since it uses less digits than its factorization.

27808361378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11894257.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 27808361378 in words is "twenty-seven billion, eight hundred eight million, three hundred sixty-one thousand, three hundred seventy-eight".