6365326640 has 20 divisors (see below), whose sum is σ = 14799384624. Its totient is φ = 2546130624.

The previous prime is 6365326621. The next prime is 6365326651. The reversal of 6365326640 is 466235636.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39783212 + ... + 39783371.

Almost surely, 2^6365326640 is an apocalyptic number.

It is an amenable number.

6365326640 is an abundant number, since it is smaller than the sum of its proper divisors (8434057984).

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

6365326640 is a wasteful number, since it uses less digits than its factorization.

6365326640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79566596 (or 79566590 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 41.

The square root of 6365326640 is about 79782.9971861173. The cubic root of 6365326640 is about 1853.2765542819.

The spelling of 6365326640 in words is "six billion, three hundred sixty-five million, three hundred twenty-six thousand, six hundred forty".