3216374561 has 2 divisors, whose sum is σ = 3216374562. Its totient is φ = 3216374560.

The previous prime is 3216374537. The next prime is 3216374569. The reversal of 3216374561 is 1654736123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3040971025 + 175403536 = 55145^2 + 13244^2 .

It is a cyclic number.

It is not a de Polignac number, because 3216374561 - 2²⁶ = 3149265697 is a prime.

It is not a weakly prime, because it can be changed into another prime (3216374569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608187280 + 1608187281.

It is an arithmetic number, because the mean of its divisors is an integer number (1608187281).

Almost surely, 2^3216374561 is an apocalyptic number.

It is an amenable number.

3216374561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3216374561 is an equidigital number, since it uses as much as digits as its factorization.

3216374561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 3216374561 is about 56713.0898558701. The cubic root of 3216374561 is about 1476.1218409431.

The spelling of 3216374561 in words is "three billion, two hundred sixteen million, three hundred seventy-four thousand, five hundred sixty-one".