646259498058 has 16 divisors (see below), whose sum is σ = 1348715474496. Its totient is φ = 206053752960.

The previous prime is 646259498057. The next prime is 646259498083. The reversal of 646259498058 is 850894952646.

It is a super-3 number, since 3×646259498058³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 646259498058.

It is not an unprimeable number, because it can be changed into a prime (646259498057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2341519783 + ... + 2341520058.

It is an arithmetic number, because the mean of its divisors is an integer number (84294717156).

Almost surely, 2^646259498058 is an apocalyptic number.

646259498058 is an abundant number, since it is smaller than the sum of its proper divisors (702455976438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646259498058 is a wasteful number, since it uses less digits than its factorization.

646259498058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4683039869.

The product of its (nonzero) digits is 149299200, while the sum is 66.

The spelling of 646259498058 in words is "six hundred forty-six billion, two hundred fifty-nine million, four hundred ninety-eight thousand, fifty-eight".