27919219273 has 4 divisors (see below), whose sum is σ = 30457330128. Its totient is φ = 25381108420.

The previous prime is 27919219261. The next prime is 27919219283. The reversal of 27919219273 is 37291291972.

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 a de Polignac number, because none of the positive numbers 2^k-27919219273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27919219273.

It is not an unprimeable number, because it can be changed into a prime (27919219283) 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, 1269055411 + ... + 1269055432.

It is an arithmetic number, because the mean of its divisors is an integer number (7614332532).

Almost surely, 2^27919219273 is an apocalyptic number.

It is an amenable number.

27919219273 is a deficient number, since it is larger than the sum of its proper divisors (2538110855).

27919219273 is a wasteful number, since it uses less digits than its factorization.

27919219273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538110854.

The product of its digits is 857304, while the sum is 52.

The spelling of 27919219273 in words is "twenty-seven billion, nine hundred nineteen million, two hundred nineteen thousand, two hundred seventy-three".