27887550260417 has 4 divisors (see below), whose sum is σ = 28200893521860. Its totient is φ = 27574206998976.

The previous prime is 27887550260411. The next prime is 27887550260431. The reversal of 27887550260417 is 71406205578872.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6768093621136 + 21119456639281 = 2601556^2 + 4595591^2 .

It is a cyclic number.

It is not a de Polignac number, because 27887550260417 - 2⁸ = 27887550260161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27887550260417.

It is not an unprimeable number, because it can be changed into a prime (27887550260411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156671630588 + ... + 156671630765.

It is an arithmetic number, because the mean of its divisors is an integer number (7050223380465).

Almost surely, 2^{27887550260417} is an apocalyptic number.

It is an amenable number.

27887550260417 is a deficient number, since it is larger than the sum of its proper divisors (313343261443).

27887550260417 is an equidigital number, since it uses as much as digits as its factorization.

27887550260417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313343261442.

The product of its (nonzero) digits is 52684800, while the sum is 62.

The spelling of 27887550260417 in words is "twenty-seven trillion, eight hundred eighty-seven billion, five hundred fifty million, two hundred sixty thousand, four hundred seventeen".