27727331577 has 16 divisors (see below), whose sum is σ = 40460359680. Its totient is φ = 16750403600.

The previous prime is 27727331561. The next prime is 27727331603. The reversal of 27727331577 is 77513372772.

It is a cyclic number.

It is not a de Polignac number, because 27727331577 - 2⁴ = 27727331561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27727331557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1340577 + ... + 1361102.

It is an arithmetic number, because the mean of its divisors is an integer number (2528772480).

Almost surely, 2^27727331577 is an apocalyptic number.

It is an amenable number.

27727331577 is a deficient number, since it is larger than the sum of its proper divisors (12733028103).

27727331577 is a wasteful number, since it uses less digits than its factorization.

27727331577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702004.

The product of its digits is 3025260, while the sum is 51.

The spelling of 27727331577 in words is "twenty-seven billion, seven hundred twenty-seven million, three hundred thirty-one thousand, five hundred seventy-seven".