27777306713 has 4 divisors (see below), whose sum is σ = 29914022628. Its totient is φ = 25640590800.

The previous prime is 27777306677. The next prime is 27777306737. The reversal of 27777306713 is 31760377772.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8398439449 + 19378867264 = 91643^2 + 139208^2 .

It is a cyclic number.

It is not a de Polignac number, because 27777306713 - 2²⁶ = 27710197849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27777306013) 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, 1068357938 + ... + 1068357963.

It is an arithmetic number, because the mean of its divisors is an integer number (7478505657).

Almost surely, 2^27777306713 is an apocalyptic number.

It is an amenable number.

27777306713 is a deficient number, since it is larger than the sum of its proper divisors (2136715915).

27777306713 is a wasteful number, since it uses less digits than its factorization.

27777306713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136715914.

The product of its (nonzero) digits is 1815156, while the sum is 50.

The spelling of 27777306713 in words is "twenty-seven billion, seven hundred seventy-seven million, three hundred six thousand, seven hundred thirteen".