27777613161 has 8 divisors (see below), whose sum is σ = 37049902240. Its totient is φ = 18511866432.

The previous prime is 27777613151. The next prime is 27777613207. The reversal of 27777613161 is 16131677772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27777613161 - 2⁷ = 27777613033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27777613161.

It is not an unprimeable number, because it can be changed into a prime (27777613151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1625671 + ... + 1642668.

It is an arithmetic number, because the mean of its divisors is an integer number (4631237780).

Almost surely, 2^27777613161 is an apocalyptic number.

It is an amenable number.

27777613161 is a deficient number, since it is larger than the sum of its proper divisors (9272289079).

27777613161 is a wasteful number, since it uses less digits than its factorization.

27777613161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3271175.

The product of its digits is 518616, while the sum is 48.

The spelling of 27777613161 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred thirteen thousand, one hundred sixty-one".