6545266560 has 640 divisors, whose sum is σ = 28311560640. Its totient is φ = 1406730240.

The previous prime is 6545266529. The next prime is 6545266579. The reversal of 6545266560 is 656625456.

It is a happy number.

6545266560 is a `hidden beast` number, since 6 + 5 + 4 + 526 + 65 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6168430 + ... + 6169490.

Almost surely, 2^6545266560 is an apocalyptic number.

6545266560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6545266560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14155780320).

6545266560 is an abundant number, since it is smaller than the sum of its proper divisors (21766294080).

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

6545266560 is a wasteful number, since it uses less digits than its factorization.

6545266560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116 (or 1095 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The square root of 6545266560 is about 80902.8217060443. The cubic root of 6545266560 is about 1870.5778152834.

The spelling of 6545266560 in words is "six billion, five hundred forty-five million, two hundred sixty-six thousand, five hundred sixty".