6533261280 has 384 divisors, whose sum is σ = 28144972800. Its totient is φ = 1378363392.

The previous prime is 6533261257. The next prime is 6533261291. The reversal of 6533261280 is 821623356.

It is a happy number.

6533261280 is a `hidden beast` number, since 6 + 5 + 3 + 32 + 612 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 384811 + ... + 401429.

It is an arithmetic number, because the mean of its divisors is an integer number (73294200).

Almost surely, 2^6533261280 is an apocalyptic number.

6533261280 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 6533261280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14072486400).

6533261280 is an abundant number, since it is smaller than the sum of its proper divisors (21611711520).

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

6533261280 is a wasteful number, since it uses less digits than its factorization.

6533261280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16663 (or 16649 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 6533261280 is about 80828.5919709109. The cubic root of 6533261280 is about 1869.4334486242.

The spelling of 6533261280 in words is "six billion, five hundred thirty-three million, two hundred sixty-one thousand, two hundred eighty".