27131748877 has 16 divisors (see below), whose sum is σ = 28857856320. Its totient is φ = 25435728000.

The previous prime is 27131748871. The next prime is 27131748901. The reversal of 27131748877 is 77884713172.

It is a cyclic number.

It is not a de Polignac number, because 27131748877 - 2³ = 27131748869 is a prime.

It is a super-2 number, since 2×27131748877² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27131748871) 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, 6988977 + ... + 6992857.

It is an arithmetic number, because the mean of its divisors is an integer number (1803616020).

Almost surely, 2^27131748877 is an apocalyptic number.

It is an amenable number.

27131748877 is a deficient number, since it is larger than the sum of its proper divisors (1726107443).

27131748877 is a wasteful number, since it uses less digits than its factorization.

27131748877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7644.

The product of its digits is 3687936, while the sum is 55.

The spelling of 27131748877 in words is "twenty-seven billion, one hundred thirty-one million, seven hundred forty-eight thousand, eight hundred seventy-seven".