71050272251 has 8 divisors (see below), whose sum is σ = 81244289280. Its totient is φ = 60867249768.

The previous prime is 71050272217. The next prime is 71050272253. The reversal of 71050272251 is 15227205017.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71050272251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71050272253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2734781 + ... + 2760638.

It is an arithmetic number, because the mean of its divisors is an integer number (10155536160).

Almost surely, 2^71050272251 is an apocalyptic number.

71050272251 is a deficient number, since it is larger than the sum of its proper divisors (10194017029).

71050272251 is a wasteful number, since it uses less digits than its factorization.

71050272251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5497273.

The product of its (nonzero) digits is 9800, while the sum is 32.

Adding to 71050272251 its reverse (15227205017), we get a palindrome (86277477268).

The spelling of 71050272251 in words is "seventy-one billion, fifty million, two hundred seventy-two thousand, two hundred fifty-one".