6561280762 has 16 divisors (see below), whose sum is σ = 9863718912. Its totient is φ = 3273384240.

The previous prime is 6561280753. The next prime is 6561280763. The reversal of 6561280762 is 2670821656.

It is not an unprimeable number, because it can be changed into a prime (6561280763) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2578863 + ... + 2581405.

It is an arithmetic number, because the mean of its divisors is an integer number (616482432).

Almost surely, 2^6561280762 is an apocalyptic number.

6561280762 is a deficient number, since it is larger than the sum of its proper divisors (3302438150).

6561280762 is a wasteful number, since it uses less digits than its factorization.

6561280762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4893.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 6561280762 is about 81001.7330802249. The cubic root of 6561280762 is about 1872.1021440007.

The spelling of 6561280762 in words is "six billion, five hundred sixty-one million, two hundred eighty thousand, seven hundred sixty-two".