27012968357 has 4 divisors (see below), whose sum is σ = 27013378380. Its totient is φ = 27012558336.

The previous prime is 27012968243. The next prime is 27012968369. The reversal of 27012968357 is 75386921072.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13400146081 + 13612822276 = 115759^2 + 116674^2 .

It is a cyclic number.

It is not a de Polignac number, because 27012968357 - 2²⁸ = 26744532901 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 (27012961357) 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, 81308 + ... + 246245.

It is an arithmetic number, because the mean of its divisors is an integer number (6753344595).

Almost surely, 2^27012968357 is an apocalyptic number.

It is an amenable number.

27012968357 is a deficient number, since it is larger than the sum of its proper divisors (410023).

27012968357 is an equidigital number, since it uses as much as digits as its factorization.

27012968357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410022.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 27012968357 in words is "twenty-seven billion, twelve million, nine hundred sixty-eight thousand, three hundred fifty-seven".