71721411427 has 8 divisors (see below), whose sum is σ = 74046172032. Its totient is φ = 69397348800.

The previous prime is 71721411383. The next prime is 71721411431. The reversal of 71721411427 is 72411412717.

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

It is a cyclic number.

It is not a de Polignac number, because 71721411427 - 2³⁵ = 37361673059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71721411457) 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, 38493 + ... + 380689.

It is an arithmetic number, because the mean of its divisors is an integer number (9255771504).

Almost surely, 2^71721411427 is an apocalyptic number.

71721411427 is a deficient number, since it is larger than the sum of its proper divisors (2324760605).

71721411427 is a wasteful number, since it uses less digits than its factorization.

71721411427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348989.

The product of its digits is 21952, while the sum is 37.

The spelling of 71721411427 in words is "seventy-one billion, seven hundred twenty-one million, four hundred eleven thousand, four hundred twenty-seven".