2666442652 has 6 divisors (see below), whose sum is σ = 4666274648. Its totient is φ = 1333221324.

The previous prime is 2666442607. The next prime is 2666442677. The reversal of 2666442652 is 2562446662.

It is a junction number, because it is equal to n+sod(n) for n = 2666442599 and 2666442608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333305328 + ... + 333305335.

Almost surely, 2^2666442652 is an apocalyptic number.

It is an amenable number.

2666442652 is a deficient number, since it is larger than the sum of its proper divisors (1999831996).

2666442652 is a wasteful number, since it uses less digits than its factorization.

2666442652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666610667 (or 666610665 counting only the distinct ones).

The product of its digits is 829440, while the sum is 43.

The square root of 2666442652 is about 51637.6088911948. The cubic root of 2666442652 is about 1386.6837168402.

The spelling of 2666442652 in words is "two billion, six hundred sixty-six million, four hundred forty-two thousand, six hundred fifty-two".