3281281251863 has 2 divisors, whose sum is σ = 3281281251864. Its totient is φ = 3281281251862.

The previous prime is 3281281251847. The next prime is 3281281251931. The reversal of 3281281251863 is 3681521821823.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3281281251863 - 2⁴ = 3281281251847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3281281251823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1640640625931 + 1640640625932.

It is an arithmetic number, because the mean of its divisors is an integer number (1640640625932).

Almost surely, 2^{3281281251863} is an apocalyptic number.

3281281251863 is a deficient number, since it is larger than the sum of its proper divisors (1).

3281281251863 is an equidigital number, since it uses as much as digits as its factorization.

3281281251863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1105920, while the sum is 50.

The spelling of 3281281251863 in words is "three trillion, two hundred eighty-one billion, two hundred eighty-one million, two hundred fifty-one thousand, eight hundred sixty-three".