3205042135656 has 64 divisors (see below), whose sum is σ = 8361239040000. Its totient is φ = 1021865769408.

The previous prime is 3205042135643. The next prime is 3205042135723. The reversal of 3205042135656 is 6565312405023.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23114325 + ... + 23252571.

It is an arithmetic number, because the mean of its divisors is an integer number (130644360000).

Almost surely, 2^{3205042135656} is an apocalyptic number.

It is an amenable number.

3205042135656 is an abundant number, since it is smaller than the sum of its proper divisors (5156196904344).

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

3205042135656 is a wasteful number, since it uses less digits than its factorization.

3205042135656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180278 (or 180274 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 3205042135656 in words is "three trillion, two hundred five billion, forty-two million, one hundred thirty-five thousand, six hundred fifty-six".