650663121330 has 24 divisors (see below), whose sum is σ = 1691724115692. Its totient is φ = 173510165664.

The previous prime is 650663121293. The next prime is 650663121331. The reversal of 650663121330 is 33121366056.

650663121330 is a `hidden beast` number, since 6 + 5 + 0 + 6 + 6 + 312 + 1 + 330 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 650121302601 + 541818729 = 806301^2 + 23277^2 .

It is not an unprimeable number, because it can be changed into a prime (650663121331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3614795029 + ... + 3614795208.

Almost surely, 2^650663121330 is an apocalyptic number.

650663121330 is an abundant number, since it is smaller than the sum of its proper divisors (1041060994362).

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

650663121330 is a wasteful number, since it uses less digits than its factorization.

650663121330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7229590250 (or 7229590247 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

Adding to 650663121330 its reverse (33121366056), we get a palindrome (683784487386).

The spelling of 650663121330 in words is "six hundred fifty billion, six hundred sixty-three million, one hundred twenty-one thousand, three hundred thirty".