6643453602 has 16 divisors (see below), whose sum is σ = 13292150400. Its totient is φ = 2213610672.

The previous prime is 6643453591. The next prime is 6643453627. The reversal of 6643453602 is 2063543466.

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, 201898 + ... + 232485.

It is an arithmetic number, because the mean of its divisors is an integer number (830759400).

Almost surely, 2^6643453602 is an apocalyptic number.

6643453602 is an abundant number, since it is smaller than the sum of its proper divisors (6648696798).

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

6643453602 is a wasteful number, since it uses less digits than its factorization.

6643453602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436937.

The product of its (nonzero) digits is 311040, while the sum is 39.

The square root of 6643453602 is about 81507.3837268747. The cubic root of 6643453602 is about 1879.8850844577.

The spelling of 6643453602 in words is "six billion, six hundred forty-three million, four hundred fifty-three thousand, six hundred two".