27808155355 has 16 divisors (see below), whose sum is σ = 33838064064. Its totient is φ = 21934540800.

The previous prime is 27808155311. The next prime is 27808155391. The reversal of 27808155355 is 55355180872.

It is a happy number.

It is not a de Polignac number, because 27808155355 - 2¹³ = 27808147163 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27808155299 and 27808155308.

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 15 ways as a sum of consecutive naturals, for example, 1276555 + ... + 1298155.

It is an arithmetic number, because the mean of its divisors is an integer number (2114879004).

Almost surely, 2^27808155355 is an apocalyptic number.

27808155355 is a deficient number, since it is larger than the sum of its proper divisors (6029908709).

27808155355 is a wasteful number, since it uses less digits than its factorization.

27808155355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25206.

The product of its (nonzero) digits is 1680000, while the sum is 49.

The spelling of 27808155355 in words is "twenty-seven billion, eight hundred eight million, one hundred fifty-five thousand, three hundred fifty-five".