272720721905 has 8 divisors (see below), whose sum is σ = 329224537152. Its totient is φ = 216870130288.

The previous prime is 272720721899. The next prime is 272720721913. The reversal of 272720721905 is 509127027272.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 272720721905 - 2⁸ = 272720721649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163304987 + ... + 163306656.

It is an arithmetic number, because the mean of its divisors is an integer number (41153067144).

Almost surely, 2^272720721905 is an apocalyptic number.

It is an amenable number.

272720721905 is a deficient number, since it is larger than the sum of its proper divisors (56503815247).

272720721905 is a wasteful number, since it uses less digits than its factorization.

272720721905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326611815.

The product of its (nonzero) digits is 246960, while the sum is 44.

The spelling of 272720721905 in words is "two hundred seventy-two billion, seven hundred twenty million, seven hundred twenty-one thousand, nine hundred five".