6663502480 has 40 divisors (see below), whose sum is σ = 15755241600. Its totient is φ = 2620222848.

The previous prime is 6663502453. The next prime is 6663502481. The reversal of 6663502480 is 842053666.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (6663502481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701160 + ... + 710599.

It is an arithmetic number, because the mean of its divisors is an integer number (393881040).

Almost surely, 2^6663502480 is an apocalyptic number.

It is an amenable number.

6663502480 is an abundant number, since it is smaller than the sum of its proper divisors (9091739120).

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

6663502480 is a wasteful number, since it uses less digits than its factorization.

6663502480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411831 (or 1411825 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 6663502480 is about 81630.2791860961. The cubic root of 6663502480 is about 1881.7742492755.

The spelling of 6663502480 in words is "six billion, six hundred sixty-three million, five hundred two thousand, four hundred eighty".