650540900000 has 72 divisors (see below), whose sum is σ = 1600838281980. Its totient is φ = 260216320000.

The previous prime is 650540899969. The next prime is 650540900029. The reversal of 650540900000 is 9045056.

650540900000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 18051534736 + 632489365264 = 134356^2 + 795292^2 .

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, 3152705 + ... + 3352704.

Almost surely, 2^650540900000 is an apocalyptic number.

It is an amenable number.

650540900000 is an abundant number, since it is smaller than the sum of its proper divisors (950297381980).

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

650540900000 is an frugal number, since it uses more digits than its factorization.

650540900000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6505444 (or 6505416 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 650540900000 its reverse (9045056), we get a palindrome (650549945056).

The spelling of 650540900000 in words is "six hundred fifty billion, five hundred forty million, nine hundred thousand".