27890379165 has 32 divisors (see below), whose sum is σ = 48691063296. Its totient is φ = 13519920960.

The previous prime is 27890379151. The next prime is 27890379173. The reversal of 27890379165 is 56197309872.

It is not a de Polignac number, because 27890379165 - 2¹⁵ = 27890346397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1003182 + ... + 1030608.

It is an arithmetic number, because the mean of its divisors is an integer number (1521595728).

Almost surely, 2^27890379165 is an apocalyptic number.

It is an amenable number.

27890379165 is a deficient number, since it is larger than the sum of its proper divisors (20800684131).

27890379165 is a wasteful number, since it uses less digits than its factorization.

27890379165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33609.

The product of its (nonzero) digits is 5715360, while the sum is 57.

The spelling of 27890379165 in words is "twenty-seven billion, eight hundred ninety million, three hundred seventy-nine thousand, one hundred sixty-five".