71564788445 has 16 divisors (see below), whose sum is σ = 88643903040. Its totient is φ = 55429046400.

The previous prime is 71564788439. The next prime is 71564788487. The reversal of 71564788445 is 54488746517.

It is not a de Polignac number, because 71564788445 - 2¹⁶ = 71564722909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1305575 + ... + 1359284.

It is an arithmetic number, because the mean of its divisors is an integer number (5540243940).

Almost surely, 2^71564788445 is an apocalyptic number.

It is an amenable number.

71564788445 is a deficient number, since it is larger than the sum of its proper divisors (17079114595).

71564788445 is a wasteful number, since it uses less digits than its factorization.

71564788445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665036.

The product of its digits is 30105600, while the sum is 59.

The spelling of 71564788445 in words is "seventy-one billion, five hundred sixty-four million, seven hundred eighty-eight thousand, four hundred forty-five".