27890636395 has 8 divisors (see below), whose sum is σ = 34923927456. Its totient is φ = 21342399936.

The previous prime is 27890636387. The next prime is 27890636399. The reversal of 27890636395 is 59363609872.

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

It is not a de Polignac number, because 27890636395 - 2³ = 27890636387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27890636399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121263522 + ... + 121263751.

It is an arithmetic number, because the mean of its divisors is an integer number (4365490932).

Almost surely, 2^27890636395 is an apocalyptic number.

27890636395 is a deficient number, since it is larger than the sum of its proper divisors (7033291061).

27890636395 is a wasteful number, since it uses less digits than its factorization.

27890636395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242527301.

The product of its (nonzero) digits is 14696640, while the sum is 58.

The spelling of 27890636395 in words is "twenty-seven billion, eight hundred ninety million, six hundred thirty-six thousand, three hundred ninety-five".