71344007424 has 54 divisors (see below), whose sum is σ = 205702368326. Its totient is φ = 23781335040.

The previous prime is 71344007419. The next prime is 71344007461. The reversal of 71344007424 is 42470044317.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40816929024 + 30527078400 = 202032^2 + 174720^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15480337 + ... + 15484944.

Almost surely, 2^71344007424 is an apocalyptic number.

It is an amenable number.

71344007424 is an abundant number, since it is smaller than the sum of its proper divisors (134358360902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71344007424 is a wasteful number, since it uses less digits than its factorization.

71344007424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30965303 (or 30965286 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 36.

The spelling of 71344007424 in words is "seventy-one billion, three hundred forty-four million, seven thousand, four hundred twenty-four".