27172323999109 has 4 divisors (see below), whose sum is σ = 27174269479104. Its totient is φ = 27170378519116.

The previous prime is 27172323999091. The next prime is 27172323999173. The reversal of 27172323999109 is 90199932327172.

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 27172323999109 - 2³⁹ = 26622568185221 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 (27172323999209) 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, 972719047 + ... + 972746980.

It is an arithmetic number, because the mean of its divisors is an integer number (6793567369776).

Almost surely, 2^{27172323999109} is an apocalyptic number.

It is an amenable number.

27172323999109 is a deficient number, since it is larger than the sum of its proper divisors (1945479995).

27172323999109 is a wasteful number, since it uses less digits than its factorization.

27172323999109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945479994.

The product of its (nonzero) digits is 23147208, while the sum is 64.

The spelling of 27172323999109 in words is "twenty-seven trillion, one hundred seventy-two billion, three hundred twenty-three million, nine hundred ninety-nine thousand, one hundred nine".