27115431413 has 4 divisors (see below), whose sum is σ = 30989064480. Its totient is φ = 23241798348.

The previous prime is 27115431367. The next prime is 27115431419. The reversal of 27115431413 is 31413451172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27115431413 - 2⁸ = 27115431157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27115431413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27115431419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1936816523 + ... + 1936816536.

It is an arithmetic number, because the mean of its divisors is an integer number (7747266120).

Almost surely, 2^27115431413 is an apocalyptic number.

It is an amenable number.

27115431413 is a deficient number, since it is larger than the sum of its proper divisors (3873633067).

27115431413 is an equidigital number, since it uses as much as digits as its factorization.

27115431413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873633066.

The product of its digits is 10080, while the sum is 32.

Adding to 27115431413 its reverse (31413451172), we get a palindrome (58528882585).

The spelling of 27115431413 in words is "twenty-seven billion, one hundred fifteen million, four hundred thirty-one thousand, four hundred thirteen".