27777675317 has 24 divisors (see below), whose sum is σ = 35393367960. Its totient is φ = 21636142080.

The previous prime is 27777675287. The next prime is 27777675319. The reversal of 27777675317 is 71357677772.

It can be written as a sum of positive squares in 4 ways, for example, as 1635312721 + 26142362596 = 40439^2 + 161686^2 .

It is not a de Polignac number, because 27777675317 - 2¹² = 27777671221 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 (27777675319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 550784 + ... + 599097.

It is an arithmetic number, because the mean of its divisors is an integer number (1474723665).

Almost surely, 2^27777675317 is an apocalyptic number.

It is an amenable number.

27777675317 is a deficient number, since it is larger than the sum of its proper divisors (7615692643).

27777675317 is a wasteful number, since it uses less digits than its factorization.

27777675317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149941 (or 1149934 counting only the distinct ones).

The product of its digits is 21176820, while the sum is 59.

The spelling of 27777675317 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred seventy-five thousand, three hundred seventeen".