6533254457856 has 640 divisors, whose sum is σ = 22533786316800. Its totient is φ = 1830335201280.

The previous prime is 6533254457827. The next prime is 6533254457861. The reversal of 6533254457856 is 6587544523356.

6533254457856 is a `hidden beast` number, since 6 + 5 + 3 + 3 + 2 + 5 + 4 + 4 + 578 + 56 = 666.

It is a super-2 number, since 2×6533254457856² (a number of 26 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 6533254457793 and 6533254457802.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2119120891 + ... + 2119123973.

It is an arithmetic number, because the mean of its divisors is an integer number (35209041120).

Almost surely, 2^{6533254457856} 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 6533254457856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11266893158400).

6533254457856 is an abundant number, since it is smaller than the sum of its proper divisors (16000531858944).

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

6533254457856 is a wasteful number, since it uses less digits than its factorization.

6533254457856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3537 (or 3515 counting only the distinct ones).

The product of its digits is 362880000, while the sum is 63.

The spelling of 6533254457856 in words is "six trillion, five hundred thirty-three billion, two hundred fifty-four million, four hundred fifty-seven thousand, eight hundred fifty-six".