27911487067775 has 24 divisors (see below), whose sum is σ = 34945045588224. Its totient is φ = 22113324111200.

The previous prime is 27911487067733. The next prime is 27911487067811. The reversal of 27911487067775 is 57776078411972.

It is not a de Polignac number, because 27911487067775 - 2¹⁰ = 27911487066751 is a prime.

It is a super-2 number, since 2×27911487067775² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27911487067699 and 27911487067708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6554810 + ... + 9939240.

It is an arithmetic number, because the mean of its divisors is an integer number (1456043566176).

Almost surely, 2^{27911487067775} is an apocalyptic number.

27911487067775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27911487067775 is a deficient number, since it is larger than the sum of its proper divisors (7033558520449).

27911487067775 is a wasteful number, since it uses less digits than its factorization.

27911487067775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387631 (or 3387626 counting only the distinct ones).

The product of its (nonzero) digits is 290424960, while the sum is 71.

The spelling of 27911487067775 in words is "twenty-seven trillion, nine hundred eleven billion, four hundred eighty-seven million, sixty-seven thousand, seven hundred seventy-five".