3283720511845 has 32 divisors (see below), whose sum is σ = 4010010935040. Its totient is φ = 2580904972800.

The previous prime is 3283720511801. The next prime is 3283720511849. The reversal of 3283720511845 is 5481150273823.

It is a de Polignac number, because none of the positive numbers 2^k-3283720511845 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3283720511849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167878176 + ... + 167897734.

It is an arithmetic number, because the mean of its divisors is an integer number (125312841720).

Almost surely, 2^{3283720511845} is an apocalyptic number.

It is an amenable number.

3283720511845 is a deficient number, since it is larger than the sum of its proper divisors (726290423195).

3283720511845 is a wasteful number, since it uses less digits than its factorization.

3283720511845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21405.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 3283720511845 in words is "three trillion, two hundred eighty-three billion, seven hundred twenty million, five hundred eleven thousand, eight hundred forty-five".