6650632662561 has 20 divisors (see below), whose sum is σ = 10519301337732. Its totient is φ = 4172945983488.

The previous prime is 6650632662547. The next prime is 6650632662563. The reversal of 6650632662561 is 1652662360566.

6650632662561 is a `hidden beast` number, since 6 + 6 + 5 + 0 + 6 + 3 + 2 + 6 + 625 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1800309163536 + 4850323499025 = 1341756^2 + 2202345^2 .

It is not a de Polignac number, because 6650632662561 - 2¹¹ = 6650632660513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6650632662498 and 6650632662507.

It is not an unprimeable number, because it can be changed into a prime (6650632662563) 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 19 ways as a sum of consecutive naturals, for example, 2414897920 + ... + 2414900673.

Almost surely, 2^{6650632662561} is an apocalyptic number.

It is an amenable number.

6650632662561 is a deficient number, since it is larger than the sum of its proper divisors (3868668675171).

6650632662561 is a wasteful number, since it uses less digits than its factorization.

6650632662561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4829798622 (or 4829798613 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 54.

The spelling of 6650632662561 in words is "six trillion, six hundred fifty billion, six hundred thirty-two million, six hundred sixty-two thousand, five hundred sixty-one".