27420228813 has 4 divisors (see below), whose sum is σ = 36560305088. Its totient is φ = 18280152540.

The previous prime is 27420228809. The next prime is 27420228821. The reversal of 27420228813 is 31882202472.

It is a happy number.

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 not a de Polignac number, because 27420228813 - 2² = 27420228809 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27420228833) 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, 4570038133 + ... + 4570038138.

It is an arithmetic number, because the mean of its divisors is an integer number (9140076272).

Almost surely, 2^27420228813 is an apocalyptic number.

It is an amenable number.

27420228813 is a deficient number, since it is larger than the sum of its proper divisors (9140076275).

27420228813 is an equidigital number, since it uses as much as digits as its factorization.

27420228813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9140076274.

The product of its (nonzero) digits is 86016, while the sum is 39.

The spelling of 27420228813 in words is "twenty-seven billion, four hundred twenty million, two hundred twenty-eight thousand, eight hundred thirteen".