6496386046640 has 80 divisors (see below), whose sum is σ = 17498289258048. Its totient is φ = 2196820942848.

The previous prime is 6496386046609. The next prime is 6496386046663. The reversal of 6496386046640 is 466406836946.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79415897 + ... + 79497656.

Almost surely, 2^{6496386046640} is an apocalyptic number.

It is an amenable number.

6496386046640 is an abundant number, since it is smaller than the sum of its proper divisors (11001903211408).

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

6496386046640 is a wasteful number, since it uses less digits than its factorization.

6496386046640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158913646 (or 158913640 counting only the distinct ones).

The product of its (nonzero) digits is 107495424, while the sum is 62.

The spelling of 6496386046640 in words is "six trillion, four hundred ninety-six billion, three hundred eighty-six million, forty-six thousand, six hundred forty".