27396604337381 has 4 divisors (see below), whose sum is σ = 27679043557452. Its totient is φ = 27114165117312.

The previous prime is 27396604337359. The next prime is 27396604337467. The reversal of 27396604337381 is 18373340669372.

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 18447926961025 + 8948677376356 = 4295105^2 + 2991434^2 .

It is a cyclic number.

It is not a de Polignac number, because 27396604337381 - 2¹⁴ = 27396604320997 is a prime.

It is a super-2 number, since 2×27396604337381² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27396604307381) 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, 141219609890 + ... + 141219610083.

It is an arithmetic number, because the mean of its divisors is an integer number (6919760889363).

Almost surely, 2^{27396604337381} is an apocalyptic number.

It is an amenable number.

27396604337381 is a deficient number, since it is larger than the sum of its proper divisors (282439220071).

27396604337381 is an equidigital number, since it uses as much as digits as its factorization.

27396604337381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282439220070.

The product of its (nonzero) digits is 82301184, while the sum is 62.

The spelling of 27396604337381 in words is "twenty-seven trillion, three hundred ninety-six billion, six hundred four million, three hundred thirty-seven thousand, three hundred eighty-one".