5661005051650 has 24 divisors (see below), whose sum is σ = 11339428581684. Its totient is φ = 2090217249600.

The previous prime is 5661005051641. The next prime is 5661005051659. The reversal of 5661005051650 is 561505001665.

It is an interprime number because it is at equal distance from previous prime (5661005051641) and next prime (5661005051659).

It can be written as a sum of positive squares in 6 ways, for example, as 929340344529 + 4731664707121 = 964023^2 + 2175239^2 .

It is not an unprimeable number, because it can be changed into a prime (5661005051659) 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, 4354618621 + ... + 4354619920.

Almost surely, 2^{5661005051650} is an apocalyptic number.

5661005051650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5661005051650 is an abundant number, since it is smaller than the sum of its proper divisors (5678423530034).

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

5661005051650 is a wasteful number, since it uses less digits than its factorization.

5661005051650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8709238566 (or 8709238561 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 5661005051650 in words is "five trillion, six hundred sixty-one billion, five million, fifty-one thousand, six hundred fifty".