106643264666 has 8 divisors (see below), whose sum is σ = 165480928020. Its totient is φ = 51482955328.

The previous prime is 106643264659. The next prime is 106643264677. The reversal of 106643264666 is 666462346601.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 95243218225 + 11400046441 = 308615^2 + 106771^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×106643264666² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 919338431 + ... + 919338546.

Almost surely, 2^106643264666 is an apocalyptic number.

106643264666 is a deficient number, since it is larger than the sum of its proper divisors (58837663354).

106643264666 is a wasteful number, since it uses less digits than its factorization.

106643264666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838677008.

The product of its (nonzero) digits is 4478976, while the sum is 50.

The spelling of 106643264666 in words is "one hundred six billion, six hundred forty-three million, two hundred sixty-four thousand, six hundred sixty-six".