6668146851 has 4 divisors (see below), whose sum is σ = 8890862472. Its totient is φ = 4445431232.

The previous prime is 6668146801. The next prime is 6668146873. The reversal of 6668146851 is 1586418666.

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

It is a cyclic number.

It is not a de Polignac number, because 6668146851 - 2¹⁴ = 6668130467 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6668146794 and 6668146803.

It is not an unprimeable number, because it can be changed into a prime (6668146801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111357806 + ... + 1111357811.

It is an arithmetic number, because the mean of its divisors is an integer number (2222715618).

Almost surely, 2^6668146851 is an apocalyptic number.

6668146851 is a deficient number, since it is larger than the sum of its proper divisors (2222715621).

6668146851 is a wasteful number, since it uses less digits than its factorization.

6668146851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222715620.

The product of its digits is 1658880, while the sum is 51.

The square root of 6668146851 is about 81658.7218305552. The cubic root of 6668146851 is about 1882.2113381332.

The spelling of 6668146851 in words is "six billion, six hundred sixty-eight million, one hundred forty-six thousand, eight hundred fifty-one".