3205990382812 has 24 divisors (see below), whose sum is σ = 6412018669056. Its totient is φ = 1373987756208.

The previous prime is 3205990382753. The next prime is 3205990382827. The reversal of 3205990382812 is 2182830995023.

It is a self number, because there is not a number n which added to its sum of digits gives 3205990382812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9149313 + ... + 9493255.

It is an arithmetic number, because the mean of its divisors is an integer number (267167444544).

Almost surely, 2^{3205990382812} is an apocalyptic number.

It is an amenable number.

3205990382812 is an abundant number, since it is smaller than the sum of its proper divisors (3206028286244).

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

3205990382812 is a wasteful number, since it uses less digits than its factorization.

3205990382812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676857 (or 676855 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 3205990382812 in words is "three trillion, two hundred five billion, nine hundred ninety million, three hundred eighty-two thousand, eight hundred twelve".