27777116081 has 32 divisors (see below), whose sum is σ = 33791385600. Its totient is φ = 22483802880.

The previous prime is 27777116071. The next prime is 27777116113. The reversal of 27777116081 is 18061177772.

It is not a de Polignac number, because 27777116081 - 2¹⁰ = 27777115057 is a prime.

It is a super-2 number, since 2×27777116081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27777116011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5301395 + ... + 5306631.

It is an arithmetic number, because the mean of its divisors is an integer number (1055980800).

Almost surely, 2^27777116081 is an apocalyptic number.

It is an amenable number.

27777116081 is a deficient number, since it is larger than the sum of its proper divisors (6014269519).

27777116081 is a wasteful number, since it uses less digits than its factorization.

27777116081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6569.

The product of its (nonzero) digits is 230496, while the sum is 47.

The spelling of 27777116081 in words is "twenty-seven billion, seven hundred seventy-seven million, one hundred sixteen thousand, eighty-one".