27777675511 has 4 divisors (see below), whose sum is σ = 27778478224. Its totient is φ = 27776872800.

The previous prime is 27777675473. The next prime is 27777675517. The reversal of 27777675511 is 11557677772.

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 27777675511 - 2⁷ = 27777675383 is a prime.

It is a super-2 number, since 2×27777675511² (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 (27777675517) 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, 346995 + ... + 419476.

It is an arithmetic number, because the mean of its divisors is an integer number (6944619556).

Almost surely, 2^27777675511 is an apocalyptic number.

27777675511 is a deficient number, since it is larger than the sum of its proper divisors (802713).

27777675511 is an equidigital number, since it uses as much as digits as its factorization.

27777675511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802712.

The product of its digits is 5042100, while the sum is 55.

The spelling of 27777675511 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred seventy-five thousand, five hundred eleven".