27787849475111 has 4 divisors (see below), whose sum is σ = 30314017609224. Its totient is φ = 25261681341000.

The previous prime is 27787849475107. The next prime is 27787849475219. The reversal of 27787849475111 is 11157494878772.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 27787849475111 - 2² = 27787849475107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27787849465111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263084067040 + ... + 1263084067061.

It is an arithmetic number, because the mean of its divisors is an integer number (7578504402306).

Almost surely, 2^{27787849475111} is an apocalyptic number.

27787849475111 is a deficient number, since it is larger than the sum of its proper divisors (2526168134113).

27787849475111 is a wasteful number, since it uses less digits than its factorization.

27787849475111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526168134112.

The product of its digits is 221276160, while the sum is 71.

The spelling of 27787849475111 in words is "twenty-seven trillion, seven hundred eighty-seven billion, eight hundred forty-nine million, four hundred seventy-five thousand, one hundred eleven".