646441606059 has 16 divisors (see below), whose sum is σ = 921152642688. Its totient is φ = 401819664512.

The previous prime is 646441606049. The next prime is 646441606073. The reversal of 646441606059 is 950606144646.

646441606059 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 646441606059 - 2¹⁶ = 646441540523 is a prime.

It is a super-2 number, since 2×646441606059² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (646441606039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59225037 + ... + 59235950.

It is an arithmetic number, because the mean of its divisors is an integer number (57572040168).

Almost surely, 2^646441606059 is an apocalyptic number.

646441606059 is a deficient number, since it is larger than the sum of its proper divisors (274711036629).

646441606059 is a wasteful number, since it uses less digits than its factorization.

646441606059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118461114.

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 646441606059 in words is "six hundred forty-six billion, four hundred forty-one million, six hundred six thousand, fifty-nine".