272720271515 has 4 divisors (see below), whose sum is σ = 327264325824. Its totient is φ = 218176217208.

The previous prime is 272720271511. The next prime is 272720271517. The reversal of 272720271515 is 515172027272.

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

It is a cyclic number.

It is not a de Polignac number, because 272720271515 - 2² = 272720271511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272720271511) 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, 27272027147 + ... + 27272027156.

It is an arithmetic number, because the mean of its divisors is an integer number (81816081456).

Almost surely, 2^272720271515 is an apocalyptic number.

272720271515 is a deficient number, since it is larger than the sum of its proper divisors (54544054309).

272720271515 is an equidigital number, since it uses as much as digits as its factorization.

272720271515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54544054308.

The product of its (nonzero) digits is 137200, while the sum is 41.

Adding to 272720271515 its reverse (515172027272), we get a palindrome (787892298787).

The spelling of 272720271515 in words is "two hundred seventy-two billion, seven hundred twenty million, two hundred seventy-one thousand, five hundred fifteen".