271521239929 has 9 divisors (see below), whose sum is σ = 274237169733. Its totient is φ = 268831961532.

The previous prime is 271521239917. The next prime is 271521240019. The reversal of 271521239929 is 929932125172.

The square root of 271521239929 is 521077.

It is a perfect power (a square), and thus also a powerful number.

It is a de Polignac number, because none of the positive numbers 2^k-271521239929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (271521237929) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 53668402 + ... + 53673460.

It is an arithmetic number, because the mean of its divisors is an integer number (30470796637).

Almost surely, 2^271521239929 is an apocalyptic number.

271521239929 is the 521077-th square number.

271521239929 is the 260539-th centered octagonal number.

It is an amenable number.

271521239929 is a deficient number, since it is larger than the sum of its proper divisors (2715929804).

271521239929 is an frugal number, since it uses more digits than its factorization.

271521239929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10324 (or 5162 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 52.

The spelling of 271521239929 in words is "two hundred seventy-one billion, five hundred twenty-one million, two hundred thirty-nine thousand, nine hundred twenty-nine".