6647815530740 has 96 divisors (see below), whose sum is σ = 14673954793344. Its totient is φ = 2526607157760.

The previous prime is 6647815530721. The next prime is 6647815530761. The reversal of 6647815530740 is 470355187466.

It is a happy number.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197617202 + ... + 197650838.

It is an arithmetic number, because the mean of its divisors is an integer number (152853695764).

Almost surely, 2^{6647815530740} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6647815530740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7336977396672).

6647815530740 is an abundant number, since it is smaller than the sum of its proper divisors (8026139262604).

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

6647815530740 is a wasteful number, since it uses less digits than its factorization.

6647815530740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39937 (or 39935 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 56.

The spelling of 6647815530740 in words is "six trillion, six hundred forty-seven billion, eight hundred fifteen million, five hundred thirty thousand, seven hundred forty".