646852444258646 has 8 divisors (see below), whose sum is σ = 1003736551435920. Its totient is φ = 312273593780008.

The previous prime is 646852444258621. The next prime is 646852444258663.

646852444258646 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×646852444258646³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5576314174586 + ... + 5576314174701.

It is an arithmetic number, because the mean of its divisors is an integer number (125467068929490).

Almost surely, 2^{646852444258646} is an apocalyptic number.

646852444258646 is a deficient number, since it is larger than the sum of its proper divisors (356884107177274).

646852444258646 is a wasteful number, since it uses less digits than its factorization.

646852444258646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11152628349318.

The product of its digits is 8493465600, while the sum is 74.

The spelling of 646852444258646 in words is "six hundred forty-six trillion, eight hundred fifty-two billion, four hundred forty-four million, two hundred fifty-eight thousand, six hundred forty-six".