8010666643 has 4 divisors (see below), whose sum is σ = 9155047600. Its totient is φ = 6866285688.

The previous prime is 8010666623. The next prime is 8010666647. The reversal of 8010666643 is 3466660108.

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 8010666643 - 2¹⁷ = 8010535571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8010666596 and 8010666605.

It is not an unprimeable number, because it can be changed into a prime (8010666647) 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, 572190468 + ... + 572190481.

It is an arithmetic number, because the mean of its divisors is an integer number (2288761900).

Almost surely, 2^8010666643 is an apocalyptic number.

8010666643 is a deficient number, since it is larger than the sum of its proper divisors (1144380957).

8010666643 is a wasteful number, since it uses less digits than its factorization.

8010666643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144380956.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 8010666643 is about 89502.3275842589. The cubic root of 8010666643 is about 2000.8884921491. Note that the first 3 decimals are identical.

The spelling of 8010666643 in words is "eight billion, ten million, six hundred sixty-six thousand, six hundred forty-three".