3728781728347 has 16 divisors (see below), whose sum is σ = 4243799589120. Its totient is φ = 3247805700000.

The previous prime is 3728781728317. The next prime is 3728781728363. The reversal of 3728781728347 is 7438271878273.

It is a cyclic number.

It is not a de Polignac number, because 3728781728347 - 2⁷ = 3728781728219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3728781728317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30010279 + ... + 30134272.

It is an arithmetic number, because the mean of its divisors is an integer number (265237474320).

Almost surely, 2^{3728781728347} is an apocalyptic number.

3728781728347 is a deficient number, since it is larger than the sum of its proper divisors (515017860773).

3728781728347 is a wasteful number, since it uses less digits than its factorization.

3728781728347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60144834.

The product of its digits is 177020928, while the sum is 67.

The spelling of 3728781728347 in words is "three trillion, seven hundred twenty-eight billion, seven hundred eighty-one million, seven hundred twenty-eight thousand, three hundred forty-seven".