545617716544 has 56 divisors (see below), whose sum is σ = 1109642495976. Its totient is φ = 266029056000.

The previous prime is 545617716529. The next prime is 545617716557. The reversal of 545617716544 is 445617716545.

It can be written as a sum of positive squares in 4 ways, for example, as 140409082944 + 405208633600 = 374712^2 + 636560^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5622354 + ... + 5718574.

It is an arithmetic number, because the mean of its divisors is an integer number (19815044571).

Almost surely, 2^545617716544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545617716544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (554821247988).

545617716544 is an abundant number, since it is smaller than the sum of its proper divisors (564024779432).

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

545617716544 is a wasteful number, since it uses less digits than its factorization.

545617716544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98435 (or 98425 counting only the distinct ones).

The product of its digits is 14112000, while the sum is 55.

Subtracting from 545617716544 its reverse (445617716545), we obtain a palindrome (99999999999).

The spelling of 545617716544 in words is "five hundred forty-five billion, six hundred seventeen million, seven hundred sixteen thousand, five hundred forty-four".