8261550650 has 12 divisors (see below), whose sum is σ = 15366484302. Its totient is φ = 3304620240.

The previous prime is 8261550643. The next prime is 8261550691. The reversal of 8261550650 is 560551628.

It can be written as a sum of positive squares in 3 ways, for example, as 7708313209 + 553237441 = 87797^2 + 23521^2 .

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 5 ways as a sum of consecutive naturals, for example, 82615457 + ... + 82615556.

Almost surely, 2^8261550650 is an apocalyptic number.

8261550650 is a deficient number, since it is larger than the sum of its proper divisors (7104933652).

8261550650 is a wasteful number, since it uses less digits than its factorization.

8261550650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165231025 (or 165231020 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 8261550650 is about 90893.0726183244. The cubic root of 8261550650 is about 2021.5625796290.

The spelling of 8261550650 in words is "eight billion, two hundred sixty-one million, five hundred fifty thousand, six hundred fifty".