27128343707 has 4 divisors (see below), whose sum is σ = 27246808320. Its totient is φ = 27009879096.

The previous prime is 27128343701. The next prime is 27128343709. The reversal of 27128343707 is 70734382172.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27128343707 - 2⁶ = 27128343643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27128343701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59231963 + ... + 59232420.

It is an arithmetic number, because the mean of its divisors is an integer number (6811702080).

Almost surely, 2^27128343707 is an apocalyptic number.

27128343707 is a deficient number, since it is larger than the sum of its proper divisors (118464613).

27128343707 is a wasteful number, since it uses less digits than its factorization.

27128343707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118464612.

The product of its (nonzero) digits is 395136, while the sum is 44.

The spelling of 27128343707 in words is "twenty-seven billion, one hundred twenty-eight million, three hundred forty-three thousand, seven hundred seven".