646058829405 has 16 divisors (see below), whose sum is σ = 1127666320704. Its totient is φ = 313240644480.

The previous prime is 646058829379. The next prime is 646058829413. The reversal of 646058829405 is 504928850646.

It is a happy number.

It is not a de Polignac number, because 646058829405 - 2¹⁵ = 646058796637 is a prime.

It is a super-2 number, since 2×646058829405² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1957753864 + ... + 1957754193.

It is an arithmetic number, because the mean of its divisors is an integer number (70479145044).

Almost surely, 2^646058829405 is an apocalyptic number.

It is an amenable number.

646058829405 is a deficient number, since it is larger than the sum of its proper divisors (481607491299).

646058829405 is a wasteful number, since it uses less digits than its factorization.

646058829405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3915508076.

The product of its (nonzero) digits is 16588800, while the sum is 57.

The spelling of 646058829405 in words is "six hundred forty-six billion, fifty-eight million, eight hundred twenty-nine thousand, four hundred five".