646018598982 has 32 divisors (see below), whose sum is σ = 1299613939200. Its totient is φ = 214078550400.

The previous prime is 646018598941. The next prime is 646018598987. The reversal of 646018598982 is 289895810646.

It is a super-2 number, since 2×646018598982² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646018598987) 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, 1208743 + ... + 1659245.

It is an arithmetic number, because the mean of its divisors is an integer number (40612935600).

Almost surely, 2^646018598982 is an apocalyptic number.

646018598982 is an abundant number, since it is smaller than the sum of its proper divisors (653595340218).

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

646018598982 is a wasteful number, since it uses less digits than its factorization.

646018598982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451908.

The product of its (nonzero) digits is 59719680, while the sum is 66.

The spelling of 646018598982 in words is "six hundred forty-six billion, eighteen million, five hundred ninety-eight thousand, nine hundred eighty-two".