651116650 has 12 divisors (see below), whose sum is σ = 1211077062. Its totient is φ = 260446640.

The previous prime is 651116629. The next prime is 651116651. The reversal of 651116650 is 56611156.

It can be written as a sum of positive squares in 3 ways, for example, as 620458281 + 30658369 = 24909^2 + 5537^2 .

It is not an unprimeable number, because it can be changed into a prime (651116651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6511117 + ... + 6511216.

Almost surely, 2^651116650 is an apocalyptic number.

651116650 is a deficient number, since it is larger than the sum of its proper divisors (559960412).

651116650 is a wasteful number, since it uses less digits than its factorization.

651116650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13022345 (or 13022340 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 651116650 is about 25516.9874789325. The cubic root of 651116650 is about 866.7348656063.

The spelling of 651116650 in words is "six hundred fifty-one million, one hundred sixteen thousand, six hundred fifty".