3213830656655 has 48 divisors (see below), whose sum is σ = 4009069209600. Its totient is φ = 2472677958336.

The previous prime is 3213830656639. The next prime is 3213830656717. The reversal of 3213830656655 is 5566560383123.

3213830656655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 1792716²-1.

It is not a de Polignac number, because 3213830656655 - 2⁴ = 3213830656639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3213830656597 and 3213830656606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 148784546 + ... + 148806144.

It is an arithmetic number, because the mean of its divisors is an integer number (83522275200).

Almost surely, 2^{3213830656655} is an apocalyptic number.

3213830656655 is a deficient number, since it is larger than the sum of its proper divisors (795238552945).

3213830656655 is a wasteful number, since it uses less digits than its factorization.

3213830656655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21908 (or 21849 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 53.

The spelling of 3213830656655 in words is "three trillion, two hundred thirteen billion, eight hundred thirty million, six hundred fifty-six thousand, six hundred fifty-five".