533261335680 has 640 divisors, whose sum is σ = 1977010675200. Its totient is φ = 136814469120.

The previous prime is 533261335667. The next prime is 533261335699. The reversal of 533261335680 is 86533162335.

533261335680 is a `hidden beast` number, since 5 + 33 + 26 + 1 + 33 + 568 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 647947749 + ... + 647948571.

It is an arithmetic number, because the mean of its divisors is an integer number (3089079180).

Almost surely, 2^533261335680 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 533261335680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (988505337600).

533261335680 is an abundant number, since it is smaller than the sum of its proper divisors (1443749339520).

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

533261335680 is a wasteful number, since it uses less digits than its factorization.

533261335680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314 (or 1293 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The spelling of 533261335680 in words is "five hundred thirty-three billion, two hundred sixty-one million, three hundred thirty-five thousand, six hundred eighty".