27027219381 has 8 divisors (see below), whose sum is σ = 36105462144. Its totient is φ = 17983561440.

The previous prime is 27027219371. The next prime is 27027219391. The reversal of 27027219381 is 18391272072.

It is an interprime number because it is at equal distance from previous prime (27027219371) and next prime (27027219391).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-27027219381 is a prime.

It is a super-2 number, since 2×27027219381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27027219341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8644381 + ... + 8647506.

It is an arithmetic number, because the mean of its divisors is an integer number (4513182768).

Almost surely, 2^27027219381 is an apocalyptic number.

It is an amenable number.

27027219381 is a deficient number, since it is larger than the sum of its proper divisors (9078242763).

27027219381 is a wasteful number, since it uses less digits than its factorization.

27027219381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17292411.

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 27027219381 in words is "twenty-seven billion, twenty-seven million, two hundred nineteen thousand, three hundred eighty-one".