4780366666 has 4 divisors (see below), whose sum is σ = 7170550002. Its totient is φ = 2390183332.

The previous prime is 4780366649. The next prime is 4780366691. The reversal of 4780366666 is 6666630874.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3372241041 + 1408125625 = 58071^2 + 37525^2 .

It is a super-2 number, since 2×4780366666² = 45703810922807911112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195091665 + ... + 1195091668.

Almost surely, 2^4780366666 is an apocalyptic number.

4780366666 is a deficient number, since it is larger than the sum of its proper divisors (2390183336).

4780366666 is a wasteful number, since it uses less digits than its factorization.

4780366666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390183335.

The product of its (nonzero) digits is 5225472, while the sum is 52.

The square root of 4780366666 is about 69140.1957330177. The cubic root of 4780366666 is about 1684.5622716898.

The spelling of 4780366666 in words is "four billion, seven hundred eighty million, three hundred sixty-six thousand, six hundred sixty-six".