6545457216 has 63 divisors (see below), whose sum is σ = 18766938463. Its totient is φ = 2181171840.

The previous prime is 6545457199. The next prime is 6545457221. The reversal of 6545457216 is 6127545456.

The square root of 6545457216 is 80904.

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

6545457216 is a `hidden beast` number, since 65 + 4 + 5 + 4 + 572 + 16 = 666.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1940011 + ... + 1943381.

Almost surely, 2^6545457216 is an apocalyptic number.

6545457216 is the 80904-th square number.

It is an amenable number.

6545457216 is an abundant number, since it is smaller than the sum of its proper divisors (12221481247).

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

6545457216 is an frugal number, since it uses more digits than its factorization.

6545457216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6760 (or 3376 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The cubic root of 6545457216 is about 1870.5959776922.

It can be divided in two parts, 6545 and 457216, that added together give a square (463761 = 681²).

The spelling of 6545457216 in words is "six billion, five hundred forty-five million, four hundred fifty-seven thousand, two hundred sixteen".