272180102321 has 4 divisors (see below), whose sum is σ = 278818641444. Its totient is φ = 265541563200.

The previous prime is 272180102273. The next prime is 272180102323. The reversal of 272180102321 is 123201081272.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105552862321 + 166627240000 = 324889^2 + 408200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-272180102321 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 (272180102323) 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, 3319269500 + ... + 3319269581.

It is an arithmetic number, because the mean of its divisors is an integer number (69704660361).

Almost surely, 2^272180102321 is an apocalyptic number.

It is an amenable number.

272180102321 is a deficient number, since it is larger than the sum of its proper divisors (6638539123).

272180102321 is an equidigital number, since it uses as much as digits as its factorization.

272180102321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6638539122.

The product of its (nonzero) digits is 2688, while the sum is 29.

Adding to 272180102321 its reverse (123201081272), we get a palindrome (395381183593).

The spelling of 272180102321 in words is "two hundred seventy-two billion, one hundred eighty million, one hundred two thousand, three hundred twenty-one".