27390513279 has 4 divisors (see below), whose sum is σ = 36520684376. Its totient is φ = 18260342184.

The previous prime is 27390513247. The next prime is 27390513289. The reversal of 27390513279 is 97231509372.

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

It is not a de Polignac number, because 27390513279 - 2⁵ = 27390513247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27390513209) 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, 4565085544 + ... + 4565085549.

It is an arithmetic number, because the mean of its divisors is an integer number (9130171094).

Almost surely, 2^27390513279 is an apocalyptic number.

27390513279 is a deficient number, since it is larger than the sum of its proper divisors (9130171097).

27390513279 is an equidigital number, since it uses as much as digits as its factorization.

27390513279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9130171096.

The product of its (nonzero) digits is 714420, while the sum is 48.

The spelling of 27390513279 in words is "twenty-seven billion, three hundred ninety million, five hundred thirteen thousand, two hundred seventy-nine".