27777611745 has 64 divisors (see below), whose sum is σ = 53301024000. Its totient is φ = 13644288000.

The previous prime is 27777611711. The next prime is 27777611777. The reversal of 27777611745 is 54711677772.

It is not a de Polignac number, because 27777611745 - 2¹⁸ = 27777349601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27777611691 and 27777611700.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 770370 + ... + 805620.

It is an arithmetic number, because the mean of its divisors is an integer number (832828500).

Almost surely, 2^27777611745 is an apocalyptic number.

It is an amenable number.

27777611745 is a deficient number, since it is larger than the sum of its proper divisors (25523412255).

27777611745 is a wasteful number, since it uses less digits than its factorization.

27777611745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35727 (or 35721 counting only the distinct ones).

The product of its digits is 4033680, while the sum is 54.

The spelling of 27777611745 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred eleven thousand, seven hundred forty-five".