3213566647963 has 8 divisors (see below), whose sum is σ = 3722957839328. Its totient is φ = 2716753017024.

The previous prime is 3213566647937. The next prime is 3213566647987. The reversal of 3213566647963 is 3697466653123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3213566647963 - 2²¹ = 3213564550811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3213566647363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3144389556 + ... + 3144390577.

It is an arithmetic number, because the mean of its divisors is an integer number (465369729916).

Almost surely, 2^{3213566647963} is an apocalyptic number.

3213566647963 is a deficient number, since it is larger than the sum of its proper divisors (509391191365).

3213566647963 is an equidigital number, since it uses as much as digits as its factorization.

3213566647963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6288780213.

The product of its digits is 88179840, while the sum is 61.

The spelling of 3213566647963 in words is "three trillion, two hundred thirteen billion, five hundred sixty-six million, six hundred forty-seven thousand, nine hundred sixty-three".