66267442674 has 24 divisors (see below), whose sum is σ = 146918518032. Its totient is φ = 21575446200.

The previous prime is 66267442669. The next prime is 66267442687. The reversal of 66267442674 is 47624476266.

66267442674 is a `hidden beast` number, since 6 + 626 + 7 + 4 + 4 + 2 + 6 + 7 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 66267442674.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42807652 + ... + 42809199.

It is an arithmetic number, because the mean of its divisors is an integer number (6121604918).

Almost surely, 2^66267442674 is an apocalyptic number.

66267442674 is an abundant number, since it is smaller than the sum of its proper divisors (80651075358).

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

66267442674 is a wasteful number, since it uses less digits than its factorization.

66267442674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85616902 (or 85616899 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 54.

The spelling of 66267442674 in words is "sixty-six billion, two hundred sixty-seven million, four hundred forty-two thousand, six hundred seventy-four".