27087422381 has 4 divisors (see below), whose sum is σ = 27088180992. Its totient is φ = 27086663772.

The previous prime is 27087422347. The next prime is 27087422393. The reversal of 27087422381 is 18322478072.

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 27087422381 - 2²² = 27083228077 is a prime.

It is a super-2 number, since 2×27087422381² (a number of 22 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 (27087422321) 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, 322955 + ... + 398088.

It is an arithmetic number, because the mean of its divisors is an integer number (6772045248).

Almost surely, 2^27087422381 is an apocalyptic number.

It is an amenable number.

27087422381 is a deficient number, since it is larger than the sum of its proper divisors (758611).

27087422381 is an equidigital number, since it uses as much as digits as its factorization.

27087422381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758610.

The product of its (nonzero) digits is 301056, while the sum is 44.

The spelling of 27087422381 in words is "twenty-seven billion, eighty-seven million, four hundred twenty-two thousand, three hundred eighty-one".