27773336881 has 4 divisors (see below), whose sum is σ = 27973145200. Its totient is φ = 27573528564.

The previous prime is 27773336869. The next prime is 27773336891. The reversal of 27773336881 is 18863337772.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27773336881 - 2⁹ = 27773336369 is a prime.

It is a super-2 number, since 2×27773336881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27773336831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99903951 + ... + 99904228.

It is an arithmetic number, because the mean of its divisors is an integer number (6993286300).

Almost surely, 2^27773336881 is an apocalyptic number.

It is an amenable number.

27773336881 is a deficient number, since it is larger than the sum of its proper divisors (199808319).

27773336881 is a wasteful number, since it uses less digits than its factorization.

27773336881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199808318.

The product of its digits is 7112448, while the sum is 55.

The spelling of 27773336881 in words is "twenty-seven billion, seven hundred seventy-three million, three hundred thirty-six thousand, eight hundred eighty-one".