71312422447 has 48 divisors (see below), whose sum is σ = 84965836032. Its totient is φ = 58623626880.

The previous prime is 71312422333. The next prime is 71312422459. The reversal of 71312422447 is 74422421317.

It is not a de Polignac number, because 71312422447 - 2²³ = 71304033839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71312522447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 232287868 + ... + 232288174.

It is an arithmetic number, because the mean of its divisors is an integer number (1770121584).

Almost surely, 2^71312422447 is an apocalyptic number.

71312422447 is a deficient number, since it is larger than the sum of its proper divisors (13653413585).

71312422447 is a wasteful number, since it uses less digits than its factorization.

71312422447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668 (or 625 counting only the distinct ones).

The product of its digits is 75264, while the sum is 37.

The spelling of 71312422447 in words is "seventy-one billion, three hundred twelve million, four hundred twenty-two thousand, four hundred forty-seven".