27323942273 has 4 divisors (see below), whose sum is σ = 27669815040. Its totient is φ = 26978069508.

The previous prime is 27323942249. The next prime is 27323942309. The reversal of 27323942273 is 37224932372.

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 27323942273 - 2²² = 27319747969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27323942213) 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, 172936265 + ... + 172936422.

It is an arithmetic number, because the mean of its divisors is an integer number (6917453760).

Almost surely, 2^27323942273 is an apocalyptic number.

It is an amenable number.

27323942273 is a deficient number, since it is larger than the sum of its proper divisors (345872767).

27323942273 is an equidigital number, since it uses as much as digits as its factorization.

27323942273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345872766.

The product of its digits is 762048, while the sum is 44.

Subtracting 27323942273 from its reverse (37224932372), we obtain a palindrome (9900990099).

The spelling of 27323942273 in words is "twenty-seven billion, three hundred twenty-three million, nine hundred forty-two thousand, two hundred seventy-three".