71271282730 has 16 divisors (see below), whose sum is σ = 128394091944. Its totient is φ = 28485005760.

The previous prime is 71271282727. The next prime is 71271282743. The reversal of 71271282730 is 3728217217.

It can be written as a sum of positive squares in 4 ways, for example, as 34243132401 + 37028150329 = 185049^2 + 192427^2 .

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, 2925681 + ... + 2949940.

Almost surely, 2^71271282730 is an apocalyptic number.

71271282730 is a deficient number, since it is larger than the sum of its proper divisors (57122809214).

71271282730 is a wasteful number, since it uses less digits than its factorization.

71271282730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5876841.

The product of its (nonzero) digits is 65856, while the sum is 40.

Adding to 71271282730 its reverse (3728217217), we get a palindrome (74999499947).

The spelling of 71271282730 in words is "seventy-one billion, two hundred seventy-one million, two hundred eighty-two thousand, seven hundred thirty".