71096356321 has 9 divisors (see below), whose sum is σ = 74328311379. Its totient is φ = 67999344336.

The previous prime is 71096356277. The next prime is 71096356339. The reversal of 71096356321 is 12365369017.

The square root of 71096356321 is 266639.

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

It can be written as a sum of positive squares in only one way, i.e., 67607800225 + 3488556096 = 260015^2 + 59064^2 .

It is not a de Polignac number, because 71096356321 - 2⁷ = 71096356193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71096356021) 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 8 ways as a sum of consecutive naturals, for example, 6126901 + ... + 6138493.

Almost surely, 2^71096356321 is an apocalyptic number.

71096356321 is the 266639-th square number.

71096356321 is the 133320-th centered octagonal number.

It is an amenable number.

71096356321 is a deficient number, since it is larger than the sum of its proper divisors (3231955058).

71096356321 is an frugal number, since it uses more digits than its factorization.

71096356321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23232 (or 11616 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 43.

The spelling of 71096356321 in words is "seventy-one billion, ninety-six million, three hundred fifty-six thousand, three hundred twenty-one".