27873393663 has 32 divisors (see below), whose sum is σ = 39637942272. Its totient is φ = 17381909600.

The previous prime is 27873393649. The next prime is 27873393671. The reversal of 27873393663 is 36639337872.

It is not a de Polignac number, because 27873393663 - 2¹⁰ = 27873392639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27873393263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5092018 + ... + 5097488.

It is an arithmetic number, because the mean of its divisors is an integer number (1238685696).

Almost surely, 2^27873393663 is an apocalyptic number.

27873393663 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

27873393663 is a deficient number, since it is larger than the sum of its proper divisors (11764548609).

27873393663 is a wasteful number, since it uses less digits than its factorization.

27873393663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7115.

The product of its digits is 20575296, while the sum is 57.

The spelling of 27873393663 in words is "twenty-seven billion, eight hundred seventy-three million, three hundred ninety-three thousand, six hundred sixty-three".