27777658055 has 32 divisors (see below), whose sum is σ = 40079007360. Its totient is φ = 18080686080.

The previous prime is 27777658039. The next prime is 27777658061. The reversal of 27777658055 is 55085677772.

It is not a de Polignac number, because 27777658055 - 2⁴ = 27777658039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27777657985 and 27777658003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208490 + ... + 314679.

It is an arithmetic number, because the mean of its divisors is an integer number (1252468980).

Almost surely, 2^27777658055 is an apocalyptic number.

27777658055 is a deficient number, since it is larger than the sum of its proper divisors (12301349305).

27777658055 is a wasteful number, since it uses less digits than its factorization.

27777658055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523259.

The product of its (nonzero) digits is 28812000, while the sum is 59.

The spelling of 27777658055 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred fifty-eight thousand, fifty-five".