27773648563 has 16 divisors (see below), whose sum is σ = 29840400000. Its totient is φ = 25772928192.

The previous prime is 27773648543. The next prime is 27773648599. The reversal of 27773648563 is 36584637772.

It is a cyclic number.

It is not a de Polignac number, because 27773648563 - 2⁵ = 27773648531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27773648498 and 27773648507.

It is not an unprimeable number, because it can be changed into a prime (27773648543) 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, 104188 + ... + 257686.

It is an arithmetic number, because the mean of its divisors is an integer number (1865025000).

Almost surely, 2^27773648563 is an apocalyptic number.

27773648563 is a deficient number, since it is larger than the sum of its proper divisors (2066751437).

27773648563 is a wasteful number, since it uses less digits than its factorization.

27773648563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153714.

The product of its digits is 35562240, while the sum is 58.

The spelling of 27773648563 in words is "twenty-seven billion, seven hundred seventy-three million, six hundred forty-eight thousand, five hundred sixty-three".