6630378611 has 4 divisors (see below), whose sum is σ = 6844261824. Its totient is φ = 6416495400.

The previous prime is 6630378583. The next prime is 6630378619. The reversal of 6630378611 is 1168730366.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6630378611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6630378619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106941560 + ... + 106941621.

It is an arithmetic number, because the mean of its divisors is an integer number (1711065456).

Almost surely, 2^6630378611 is an apocalyptic number.

6630378611 is a deficient number, since it is larger than the sum of its proper divisors (213883213).

6630378611 is a wasteful number, since it uses less digits than its factorization.

6630378611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213883212.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 6630378611 is about 81427.1368218237. The cubic root of 6630378611 is about 1878.6510062880.

The spelling of 6630378611 in words is "six billion, six hundred thirty million, three hundred seventy-eight thousand, six hundred eleven".