27027777919 has 4 divisors (see below), whose sum is σ = 27072305344. Its totient is φ = 26983250496.

The previous prime is 27027777911. The next prime is 27027777949. The reversal of 27027777919 is 91977772072.

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

It is a cyclic number.

It is not a de Polignac number, because 27027777919 - 2³ = 27027777911 is a prime.

It is a super-2 number, since 2×27027777919² (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 (27027777911) 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, 22262802 + ... + 22264015.

It is an arithmetic number, because the mean of its divisors is an integer number (6768076336).

Almost surely, 2^27027777919 is an apocalyptic number.

27027777919 is a deficient number, since it is larger than the sum of its proper divisors (44527425).

27027777919 is an equidigital number, since it uses as much as digits as its factorization.

27027777919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44527424.

The product of its (nonzero) digits is 5445468, while the sum is 58.

The spelling of 27027777919 in words is "twenty-seven billion, twenty-seven million, seven hundred seventy-seven thousand, nine hundred nineteen".