71855154934564 has 81 divisors (see below), whose sum is σ = 132586043794491. Its totient is φ = 34071416794800.

The previous prime is 71855154934439. The next prime is 71855154934597. The reversal of 71855154934564 is 46543945155817.

The square root of 71855154934564 is 8476742.

It is a perfect power (a square), and thus also a powerful number.

71855154934564 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71855154934564.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 49521126039 + ... + 49521127489.

Almost surely, 2^{71855154934564} is an apocalyptic number.

71855154934564 is the 8476742-nd square number.

It is an amenable number.

71855154934564 is a deficient number, since it is larger than the sum of its proper divisors (60730888859927).

71855154934564 is an equidigital number, since it uses as much as digits as its factorization.

71855154934564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206 (or 1603 counting only the distinct ones).

The product of its digits is 362880000, while the sum is 67.

The spelling of 71855154934564 in words is "seventy-one trillion, eight hundred fifty-five billion, one hundred fifty-four million, nine hundred thirty-four thousand, five hundred sixty-four".