6651650000 has 60 divisors (see below), whose sum is σ = 16108554924. Its totient is φ = 2660640000.

The previous prime is 6651649999. The next prime is 6651650003. The reversal of 6651650000 is 561566.

It can be written as a sum of positive squares in 6 ways, for example, as 6592790416 + 58859584 = 81196^2 + 7672^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651650003) 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, 16517 + ... + 116516.

Almost surely, 2^6651650000 is an apocalyptic number.

It is an amenable number.

6651650000 is an abundant number, since it is smaller than the sum of its proper divisors (9456904924).

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

6651650000 is an equidigital number, since it uses as much as digits as its factorization.

6651650000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133066 (or 133040 counting only the distinct ones).

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

The square root of 6651650000 is about 81557.6483231340. The cubic root of 6651650000 is about 1880.6578729762.

The spelling of 6651650000 in words is "six billion, six hundred fifty-one million, six hundred fifty thousand".