71447434177 has 16 divisors (see below), whose sum is σ = 82150238592. Its totient is φ = 60868846080.

The previous prime is 71447434159. The next prime is 71447434189. The reversal of 71447434177 is 77143474417.

It is not a de Polignac number, because 71447434177 - 2⁷ = 71447434049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71447434177.

It is not an unprimeable number, because it can be changed into a prime (71447464177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5674513 + ... + 5687089.

It is an arithmetic number, because the mean of its divisors is an integer number (5134389912).

Almost surely, 2^71447434177 is an apocalyptic number.

It is an amenable number.

71447434177 is a deficient number, since it is larger than the sum of its proper divisors (10702804415).

71447434177 is a wasteful number, since it uses less digits than its factorization.

71447434177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17448.

The product of its digits is 1843968, while the sum is 49.

The spelling of 71447434177 in words is "seventy-one billion, four hundred forty-seven million, four hundred thirty-four thousand, one hundred seventy-seven".