6409326768 has 80 divisors (see below), whose sum is σ = 18082342656. Its totient is φ = 1944311040.

The previous prime is 6409326751. The next prime is 6409326769. The reversal of 6409326768 is 8676239046.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6409326768.

It is not an unprimeable number, because it can be changed into a prime (6409326769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28030 + ... + 116637.

Almost surely, 2^6409326768 is an apocalyptic number.

It is an amenable number.

6409326768 is an abundant number, since it is smaller than the sum of its proper divisors (11673015888).

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

6409326768 is a wasteful number, since it uses less digits than its factorization.

6409326768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144762 (or 144756 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 51.

The square root of 6409326768 is about 80058.2710780092. The cubic root of 6409326768 is about 1857.5369919819.

The spelling of 6409326768 in words is "six billion, four hundred nine million, three hundred twenty-six thousand, seven hundred sixty-eight".