71224370145 has 16 divisors (see below), whose sum is σ = 126621102720. Its totient is φ = 37986330672.

The previous prime is 71224370141. The next prime is 71224370171. The reversal of 71224370145 is 54107342217.

It is not a de Polignac number, because 71224370145 - 2² = 71224370141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71224370141) 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 15 ways as a sum of consecutive naturals, for example, 263793829 + ... + 263794098.

It is an arithmetic number, because the mean of its divisors is an integer number (7913818920).

Almost surely, 2^71224370145 is an apocalyptic number.

It is an amenable number.

71224370145 is a deficient number, since it is larger than the sum of its proper divisors (55396732575).

71224370145 is a wasteful number, since it uses less digits than its factorization.

71224370145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527587941 (or 527587935 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The spelling of 71224370145 in words is "seventy-one billion, two hundred twenty-four million, three hundred seventy thousand, one hundred forty-five".