6545464128 has 336 divisors, whose sum is σ = 23106603520. Its totient is φ = 1729631232.

The previous prime is 6545464103. The next prime is 6545464141. The reversal of 6545464128 is 8214645456.

It is a happy number.

6545464128 is a `hidden beast` number, since 6 + 545 + 46 + 41 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3293151 + ... + 3295137.

Almost surely, 2^6545464128 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 6545464128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11553301760).

6545464128 is an abundant number, since it is smaller than the sum of its proper divisors (16561139392).

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

6545464128 is a wasteful number, since it uses less digits than its factorization.

6545464128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074 (or 2061 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 6545464128 is about 80904.0427172833. The cubic root of 6545464128 is about 1870.5966361415.

The spelling of 6545464128 in words is "six billion, five hundred forty-five million, four hundred sixty-four thousand, one hundred twenty-eight".