27666617343 has 16 divisors (see below), whose sum is σ = 39070045440. Its totient is φ = 17354427776.

The previous prime is 27666617339. The next prime is 27666617449. The reversal of 27666617343 is 34371666672.

It is a cyclic number.

It is not a de Polignac number, because 27666617343 - 2² = 27666617339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27666617243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103846 + ... + 257132.

It is an arithmetic number, because the mean of its divisors is an integer number (2441877840).

Almost surely, 2^27666617343 is an apocalyptic number.

27666617343 is a deficient number, since it is larger than the sum of its proper divisors (11403428097).

27666617343 is a wasteful number, since it uses less digits than its factorization.

27666617343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156846.

The product of its digits is 4572288, while the sum is 51.

The spelling of 27666617343 in words is "twenty-seven billion, six hundred sixty-six million, six hundred seventeen thousand, three hundred forty-three".