3215232921689 has 2 divisors, whose sum is σ = 3215232921690. Its totient is φ = 3215232921688.

The previous prime is 3215232921541. The next prime is 3215232921697. The reversal of 3215232921689 is 9861292325123.

3215232921689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2179733337664 + 1035499584025 = 1476392^2 + 1017595^2 .

It is a cyclic number.

It is not a de Polignac number, because 3215232921689 - 2²⁴ = 3215216144473 is a prime.

It is a super-2 number, since 2×3215232921689² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3215232921689.

It is not a weakly prime, because it can be changed into another prime (3215232923689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607616460844 + 1607616460845.

It is an arithmetic number, because the mean of its divisors is an integer number (1607616460845).

Almost surely, 2^{3215232921689} is an apocalyptic number.

It is an amenable number.

3215232921689 is a deficient number, since it is larger than the sum of its proper divisors (1).

3215232921689 is an equidigital number, since it uses as much as digits as its factorization.

3215232921689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 53.

The spelling of 3215232921689 in words is "three trillion, two hundred fifteen billion, two hundred thirty-two million, nine hundred twenty-one thousand, six hundred eighty-nine".