27072346217 has 4 divisors (see below), whose sum is σ = 30939824256. Its totient is φ = 23204868180.

The previous prime is 27072346193. The next prime is 27072346309. The reversal of 27072346217 is 71264327072.

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 27072346217 - 2¹⁰ = 27072345193 is a prime.

It is a super-2 number, since 2×27072346217² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27072345217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1933739009 + ... + 1933739022.

It is an arithmetic number, because the mean of its divisors is an integer number (7734956064).

Almost surely, 2^27072346217 is an apocalyptic number.

It is an amenable number.

27072346217 is a deficient number, since it is larger than the sum of its proper divisors (3867478039).

27072346217 is an equidigital number, since it uses as much as digits as its factorization.

27072346217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3867478038.

The product of its (nonzero) digits is 197568, while the sum is 41.

The spelling of 27072346217 in words is "twenty-seven billion, seventy-two million, three hundred forty-six thousand, two hundred seventeen".