6555065010561 has 12 divisors (see below), whose sum is σ = 9574814061540. Its totient is φ = 4320941729280.

The previous prime is 6555065010553. The next prime is 6555065010619. The reversal of 6555065010561 is 1650105605556.

It can be written as a sum of positive squares in 2 ways, for example, as 3194241115536 + 3360823895025 = 1787244^2 + 1833255^2 .

It is not a de Polignac number, because 6555065010561 - 2³ = 6555065010553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6555065010521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4091800080 + ... + 4091801681.

It is an arithmetic number, because the mean of its divisors is an integer number (797901171795).

Almost surely, 2^{6555065010561} is an apocalyptic number.

It is an amenable number.

6555065010561 is a deficient number, since it is larger than the sum of its proper divisors (3019749050979).

6555065010561 is a wasteful number, since it uses less digits than its factorization.

6555065010561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8183601856 (or 8183601853 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 6555065010561 in words is "six trillion, five hundred fifty-five billion, sixty-five million, ten thousand, five hundred sixty-one".