27775530511 has 4 divisors (see below), whose sum is σ = 27789769024. Its totient is φ = 27761292000.

The previous prime is 27775530509. The next prime is 27775530521. The reversal of 27775530511 is 11503557772.

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

It is a 5-Lehmer number, since φ(27775530511) divides (27775530511-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 27775530511 - 2¹ = 27775530509 is a prime.

It is a super-2 number, since 2×27775530511² (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 (27775530521) 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, 7116330 + ... + 7120231.

It is an arithmetic number, because the mean of its divisors is an integer number (6947442256).

Almost surely, 2^27775530511 is an apocalyptic number.

27775530511 is a deficient number, since it is larger than the sum of its proper divisors (14238513).

27775530511 is a wasteful number, since it uses less digits than its factorization.

27775530511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14238512.

The product of its (nonzero) digits is 257250, while the sum is 43.

The spelling of 27775530511 in words is "twenty-seven billion, seven hundred seventy-five million, five hundred thirty thousand, five hundred eleven".