4221646431139 has 2 divisors, whose sum is σ = 4221646431140. Its totient is φ = 4221646431138.

The previous prime is 4221646431019. The next prime is 4221646431157. The reversal of 4221646431139 is 9311346461224.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4221646431139 - 2¹³ = 4221646422947 is a prime.

It is not a weakly prime, because it can be changed into another prime (4221646431179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110823215569 + 2110823215570.

It is an arithmetic number, because the mean of its divisors is an integer number (2110823215570).

Almost surely, 2^{4221646431139} is an apocalyptic number.

4221646431139 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221646431139 is an equidigital number, since it uses as much as digits as its factorization.

4221646431139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 46.

The spelling of 4221646431139 in words is "four trillion, two hundred twenty-one billion, six hundred forty-six million, four hundred thirty-one thousand, one hundred thirty-nine".