27730823155 has 8 divisors (see below), whose sum is σ = 38030843232. Its totient is φ = 19015421568.

The previous prime is 27730823069. The next prime is 27730823177. The reversal of 27730823155 is 55132803772.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27730823155 - 2²⁵ = 27697268723 is a prime.

It is a Duffinian 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, 396154582 + ... + 396154651.

It is an arithmetic number, because the mean of its divisors is an integer number (4753855404).

Almost surely, 2^27730823155 is an apocalyptic number.

27730823155 is a deficient number, since it is larger than the sum of its proper divisors (10300020077).

27730823155 is an equidigital number, since it uses as much as digits as its factorization.

27730823155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792309245.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 27730823155 in words is "twenty-seven billion, seven hundred thirty million, eight hundred twenty-three thousand, one hundred fifty-five".