646096047089 has 2 divisors, whose sum is σ = 646096047090. Its totient is φ = 646096047088.

The previous prime is 646096047067. The next prime is 646096047133. The reversal of 646096047089 is 980740690646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 523259816689 + 122836230400 = 723367^2 + 350480^2 .

It is a cyclic number.

It is not a de Polignac number, because 646096047089 - 2²⁴ = 646079269873 is a prime.

It is not a weakly prime, because it can be changed into another prime (646096047019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323048023544 + 323048023545.

It is an arithmetic number, because the mean of its divisors is an integer number (323048023545).

Almost surely, 2^646096047089 is an apocalyptic number.

It is an amenable number.

646096047089 is a deficient number, since it is larger than the sum of its proper divisors (1).

646096047089 is an equidigital number, since it uses as much as digits as its factorization.

646096047089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15676416, while the sum is 59.

The spelling of 646096047089 in words is "six hundred forty-six billion, ninety-six million, forty-seven thousand, eighty-nine".