71324457765 has 32 divisors (see below), whose sum is σ = 124507262592. Its totient is φ = 34577760000.

The previous prime is 71324457731. The next prime is 71324457773. The reversal of 71324457765 is 56775442317.

It is not a de Polignac number, because 71324457765 - 2¹⁰ = 71324456741 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2012095 + ... + 2047235.

It is an arithmetic number, because the mean of its divisors is an integer number (3890851956).

Almost surely, 2^71324457765 is an apocalyptic number.

It is an amenable number.

71324457765 is a deficient number, since it is larger than the sum of its proper divisors (53182804827).

71324457765 is a wasteful number, since it uses less digits than its factorization.

71324457765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47461.

The product of its digits is 4939200, while the sum is 51.

The spelling of 71324457765 in words is "seventy-one billion, three hundred twenty-four million, four hundred fifty-seven thousand, seven hundred sixty-five".