6536771280 has 600 divisors, whose sum is σ = 25304666112. Its totient is φ = 1562416128.

The previous prime is 6536771279. The next prime is 6536771299. The reversal of 6536771280 is 821776356.

6536771280 is a `hidden beast` number, since 6 + 5 + 367 + 7 + 1 + 280 = 666.

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

It is a congruent number.

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 119 ways as a sum of consecutive naturals, for example, 51470577 + ... + 51470703.

Almost surely, 2^6536771280 is an apocalyptic number.

6536771280 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 6536771280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12652333056).

6536771280 is an abundant number, since it is smaller than the sum of its proper divisors (18767894832).

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

6536771280 is a wasteful number, since it uses less digits than its factorization.

6536771280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 6536771280 is about 80850.3016691960. The cubic root of 6536771280 is about 1869.7681735739.

The spelling of 6536771280 in words is "six billion, five hundred thirty-six million, seven hundred seventy-one thousand, two hundred eighty".