27144340939 has 4 divisors (see below), whose sum is σ = 27549480424. Its totient is φ = 26739201456.

The previous prime is 27144340913. The next prime is 27144340967. The reversal of 27144340939 is 93904344172.

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 27144340939 - 2⁵ = 27144340907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27144340739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202569642 + ... + 202569775.

It is an arithmetic number, because the mean of its divisors is an integer number (6887370106).

Almost surely, 2^27144340939 is an apocalyptic number.

27144340939 is a deficient number, since it is larger than the sum of its proper divisors (405139485).

27144340939 is an equidigital number, since it uses as much as digits as its factorization.

27144340939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405139484.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 27144340939 in words is "twenty-seven billion, one hundred forty-four million, three hundred forty thousand, nine hundred thirty-nine".