27381818373 has 16 divisors (see below), whose sum is σ = 44934266496. Its totient is φ = 14443156800.

The previous prime is 27381818371. The next prime is 27381818393. The reversal of 27381818373 is 37381818372.

It is not a de Polignac number, because 27381818373 - 2¹ = 27381818371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27381818371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50149578 + ... + 50150123.

It is an arithmetic number, because the mean of its divisors is an integer number (2808391656).

Almost surely, 2^27381818373 is an apocalyptic number.

It is an amenable number.

27381818373 is a deficient number, since it is larger than the sum of its proper divisors (17552448123).

27381818373 is a wasteful number, since it uses less digits than its factorization.

27381818373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100299724.

The product of its digits is 1354752, while the sum is 51.

Subtracting 27381818373 from its reverse (37381818372), we obtain a palindrome (9999999999).

The spelling of 27381818373 in words is "twenty-seven billion, three hundred eighty-one million, eight hundred eighteen thousand, three hundred seventy-three".