71726274671 has 4 divisors (see below), whose sum is σ = 72796816152. Its totient is φ = 70655733192.

The previous prime is 71726274667. The next prime is 71726274679. The reversal of 71726274671 is 17647262717.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17647262717 = 7 ⋅2521037531.

It is a cyclic number.

It is not a de Polignac number, because 71726274671 - 2² = 71726274667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71726274679) 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 3 ways as a sum of consecutive naturals, for example, 535270640 + ... + 535270773.

It is an arithmetic number, because the mean of its divisors is an integer number (18199204038).

Almost surely, 2^71726274671 is an apocalyptic number.

71726274671 is a deficient number, since it is larger than the sum of its proper divisors (1070541481).

71726274671 is a wasteful number, since it uses less digits than its factorization.

71726274671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070541480.

The product of its digits is 1382976, while the sum is 50.

The spelling of 71726274671 in words is "seventy-one billion, seven hundred twenty-six million, two hundred seventy-four thousand, six hundred seventy-one".