646259498075 has 12 divisors (see below), whose sum is σ = 810365845320. Its totient is φ = 511198522560.

The previous prime is 646259498057. The next prime is 646259498083. The reversal of 646259498075 is 570894952646.

It is not a de Polignac number, because 646259498075 - 2²⁴ = 646242720859 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145224629 + ... + 145229078.

It is an arithmetic number, because the mean of its divisors is an integer number (67530487110).

Almost surely, 2^646259498075 is an apocalyptic number.

646259498075 is a deficient number, since it is larger than the sum of its proper divisors (164106347245).

646259498075 is a wasteful number, since it uses less digits than its factorization.

646259498075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290453806 (or 290453801 counting only the distinct ones).

The product of its (nonzero) digits is 130636800, while the sum is 65.

The spelling of 646259498075 in words is "six hundred forty-six billion, two hundred fifty-nine million, four hundred ninety-eight thousand, seventy-five".