27768861119 has 4 divisors (see below), whose sum is σ = 28043800440. Its totient is φ = 27493921800.

The previous prime is 27768861073. The next prime is 27768861149. The reversal of 27768861119 is 91116886772.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27768861119 is a prime.

It is a super-2 number, since 2×27768861119² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27768861149) 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, 137469509 + ... + 137469710.

It is an arithmetic number, because the mean of its divisors is an integer number (7010950110).

Almost surely, 2^27768861119 is an apocalyptic number.

27768861119 is a deficient number, since it is larger than the sum of its proper divisors (274939321).

27768861119 is a wasteful number, since it uses less digits than its factorization.

27768861119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274939320.

The product of its digits is 2032128, while the sum is 56.

The spelling of 27768861119 in words is "twenty-seven billion, seven hundred sixty-eight million, eight hundred sixty-one thousand, one hundred nineteen".