4251616650 has 36 divisors (see below), whose sum is σ = 11422677942. Its totient is φ = 1133764320.

The previous prime is 4251616619. The next prime is 4251616657. The reversal of 4251616650 is 566161524.

It can be written as a sum of positive squares in 3 ways, for example, as 2452923729 + 1798692921 = 49527^2 + 42411^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4251616657) 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 17 ways as a sum of consecutive naturals, for example, 4723569 + ... + 4724468.

Almost surely, 2^4251616650 is an apocalyptic number.

4251616650 is an abundant number, since it is smaller than the sum of its proper divisors (7171061292).

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

4251616650 is a wasteful number, since it uses less digits than its factorization.

4251616650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9448055 (or 9448047 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 4251616650 is about 65204.4220126212. The cubic root of 4251616650 is about 1620.0112596382.

The spelling of 4251616650 in words is "four billion, two hundred fifty-one million, six hundred sixteen thousand, six hundred fifty".