6549154560 has 720 divisors, whose sum is σ = 26052120864. Its totient is φ = 1560674304.

The previous prime is 6549154543. The next prime is 6549154561. The reversal of 6549154560 is 654519456.

6549154560 is a `hidden beast` number, since 6 + 5 + 49 + 1 + 545 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a super-3 number, since 3×6549154560³ (a number of 30 digits) contains 333 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (6549154561) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 57957064 + ... + 57957176.

Almost surely, 2^6549154560 is an apocalyptic number.

6549154560 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 6549154560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13026060432).

6549154560 is an abundant number, since it is smaller than the sum of its proper divisors (19502966304).

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

6549154560 is a wasteful number, since it uses less digits than its factorization.

6549154560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The square root of 6549154560 is about 80926.8469668750. The cubic root of 6549154560 is about 1870.9481270141.

The spelling of 6549154560 in words is "six billion, five hundred forty-nine million, one hundred fifty-four thousand, five hundred sixty".