3206450686640 has 20 divisors (see below), whose sum is σ = 7454997846624. Its totient is φ = 1282580274624.

The previous prime is 3206450686639. The next prime is 3206450686661. The reversal of 3206450686640 is 466860546023.

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, 20040316712 + ... + 20040316871.

Almost surely, 2^{3206450686640} is an apocalyptic number.

It is an amenable number.

3206450686640 is an abundant number, since it is smaller than the sum of its proper divisors (4248547159984).

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

3206450686640 is a wasteful number, since it uses less digits than its factorization.

3206450686640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40080633596 (or 40080633590 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 50.

The spelling of 3206450686640 in words is "three trillion, two hundred six billion, four hundred fifty million, six hundred eighty-six thousand, six hundred forty".