27774145663 has 8 divisors (see below), whose sum is σ = 30664118016. Its totient is φ = 24945015000.

The previous prime is 27774145661. The next prime is 27774145697. The reversal of 27774145663 is 36654147772.

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

It is a cyclic number.

It is not a de Polignac number, because 27774145663 - 2¹ = 27774145661 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 27774145663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27774145661) 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, 15209463 + ... + 15211288.

It is an arithmetic number, because the mean of its divisors is an integer number (3833014752).

Almost surely, 2^27774145663 is an apocalyptic number.

27774145663 is a deficient number, since it is larger than the sum of its proper divisors (2889972353).

27774145663 is a wasteful number, since it uses less digits than its factorization.

27774145663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30420845.

The product of its digits is 5927040, while the sum is 52.

The spelling of 27774145663 in words is "twenty-seven billion, seven hundred seventy-four million, one hundred forty-five thousand, six hundred sixty-three".