3486728235721 has 8 divisors (see below), whose sum is σ = 3561078044160. Its totient is φ = 3412385264928.

The previous prime is 3486728235713. The next prime is 3486728235763. The reversal of 3486728235721 is 1275328276843.

3486728235721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3486728235721 - 2³ = 3486728235713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3486728232721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672036 + ... + 2724901.

It is an arithmetic number, because the mean of its divisors is an integer number (445134755520).

Almost surely, 2^{3486728235721} is an apocalyptic number.

It is an amenable number.

3486728235721 is a deficient number, since it is larger than the sum of its proper divisors (74349808439).

3486728235721 is a wasteful number, since it uses less digits than its factorization.

3486728235721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3418823.

The product of its digits is 27095040, while the sum is 58.

The spelling of 3486728235721 in words is "three trillion, four hundred eighty-six billion, seven hundred twenty-eight million, two hundred thirty-five thousand, seven hundred twenty-one".