27663513365 has 8 divisors (see below), whose sum is σ = 33197779968. Its totient is φ = 22129768080.

The previous prime is 27663513343. The next prime is 27663513407. The reversal of 27663513365 is 56331536672.

It is a happy number.

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

It is not a de Polignac number, because 27663513365 - 2¹⁸ = 27663251221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2117 + ... + 235226.

It is an arithmetic number, because the mean of its divisors is an integer number (4149722496).

Almost surely, 2^27663513365 is an apocalyptic number.

It is an amenable number.

27663513365 is a deficient number, since it is larger than the sum of its proper divisors (5534266603).

27663513365 is a wasteful number, since it uses less digits than its factorization.

27663513365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260659.

The product of its digits is 2041200, while the sum is 47.

The spelling of 27663513365 in words is "twenty-seven billion, six hundred sixty-three million, five hundred thirteen thousand, three hundred sixty-five".