3205513040000 has 80 divisors (see below), whose sum is σ = 7979924567670. Its totient is φ = 1282205184000.

The previous prime is 3205513039901. The next prime is 3205513040057. The reversal of 3205513040000 is 403155023.

It can be written as a sum of positive squares in 5 ways, for example, as 155683906624 + 3049829133376 = 394568^2 + 1746376^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×3205513040000² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19954457 + ... + 20114456.

Almost surely, 2^{3205513040000} is an apocalyptic number.

It is an amenable number.

3205513040000 is an abundant number, since it is smaller than the sum of its proper divisors (4774411527670).

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

3205513040000 is an frugal number, since it uses more digits than its factorization.

3205513040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40068947 (or 40068920 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

Adding to 3205513040000 its reverse (403155023), we get a palindrome (3205916195023).

The spelling of 3205513040000 in words is "three trillion, two hundred five billion, five hundred thirteen million, forty thousand".