6663100520 has 32 divisors (see below), whose sum is σ = 15054205320. Its totient is φ = 2654177280.

The previous prime is 6663100501. The next prime is 6663100531. The reversal of 6663100520 is 250013666.

It can be written as a sum of positive squares in 4 ways, for example, as 6199042756 + 464057764 = 78734^2 + 21542^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335957 + ... + 355236.

Almost surely, 2^6663100520 is an apocalyptic number.

It is an amenable number.

6663100520 is an abundant number, since it is smaller than the sum of its proper divisors (8391104800).

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

6663100520 is a wasteful number, since it uses less digits than its factorization.

6663100520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691445 (or 691441 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 6663100520 is about 81627.8170723682. The cubic root of 6663100520 is about 1881.7364106568.

The spelling of 6663100520 in words is "six billion, six hundred sixty-three million, one hundred thousand, five hundred twenty".