651606510050 has 24 divisors (see below), whose sum is σ = 1212101447700. Its totient is φ = 260618230080.

The previous prime is 651606510031. The next prime is 651606510077. The reversal of 651606510050 is 50015606156.

It can be written as a sum of positive squares in 6 ways, for example, as 75709173409 + 575897336641 = 275153^2 + 758879^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64505 + ... + 1143404.

Almost surely, 2^651606510050 is an apocalyptic number.

651606510050 is a deficient number, since it is larger than the sum of its proper divisors (560494937650).

651606510050 is a wasteful number, since it uses less digits than its factorization.

651606510050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218710 (or 1218705 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 651606510050 in words is "six hundred fifty-one billion, six hundred six million, five hundred ten thousand, fifty".