6642816184674 has 336 divisors, whose sum is σ = 15964980712704. Its totient is φ = 2069654328000.

The previous prime is 6642816184603. The next prime is 6642816184679. The reversal of 6642816184674 is 4764816182466.

6642816184674 is a `hidden beast` number, since 6 + 6 + 4 + 2 + 8 + 1 + 618 + 4 + 6 + 7 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (6642816184679) by changing a digit.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 8440680909 + ... + 8440681695.

Almost surely, 2^{6642816184674} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6642816184674, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7982490356352).

6642816184674 is an abundant number, since it is smaller than the sum of its proper divisors (9322164528030).

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

6642816184674 is a wasteful number, since it uses less digits than its factorization.

6642816184674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025 (or 967 counting only the distinct ones).

The product of its digits is 74317824, while the sum is 63.

The spelling of 6642816184674 in words is "six trillion, six hundred forty-two billion, eight hundred sixteen million, one hundred eighty-four thousand, six hundred seventy-four".