3306721715125 has 16 divisors (see below), whose sum is σ = 4127646876912. Its totient is φ = 2644827259200.

The previous prime is 3306721715117. The next prime is 3306721715153. The reversal of 3306721715125 is 5215171276033.

It can be written as a sum of positive squares in 8 ways, for example, as 213087484996 + 3093634230129 = 461614^2 + 1758873^2 .

It is not a de Polignac number, because 3306721715125 - 2³ = 3306721715117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 2146534 + ... + 3349783.

It is an arithmetic number, because the mean of its divisors is an integer number (257977929807).

Almost surely, 2^{3306721715125} is an apocalyptic number.

It is an amenable number.

3306721715125 is a deficient number, since it is larger than the sum of its proper divisors (820925161787).

3306721715125 is an equidigital number, since it uses as much as digits as its factorization.

3306721715125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5501145 (or 5501135 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 3306721715125 in words is "three trillion, three hundred six billion, seven hundred twenty-one million, seven hundred fifteen thousand, one hundred twenty-five".