6545229867540 has 1536 divisors, whose sum is σ = 27525092474880. Its totient is φ = 1253028372480.

The previous prime is 6545229867503. The next prime is 6545229867587. The reversal of 6545229867540 is 457689225456.

6545229867540 is a `hidden beast` number, since 6 + 5 + 4 + 5 + 2 + 2 + 9 + 86 + 7 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 24886805449 + ... + 24886805711.

It is an arithmetic number, because the mean of its divisors is an integer number (17919982080).

Almost surely, 2^{6545229867540} is an apocalyptic number.

6545229867540 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 6545229867540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13762546237440).

6545229867540 is an abundant number, since it is smaller than the sum of its proper divisors (20979862607340).

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

6545229867540 is a wasteful number, since it uses less digits than its factorization.

6545229867540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 145152000, while the sum is 63.

The spelling of 6545229867540 in words is "six trillion, five hundred forty-five billion, two hundred twenty-nine million, eight hundred sixty-seven thousand, five hundred forty".