13005620666 has 8 divisors (see below), whose sum is σ = 19511324064. Its totient is φ = 6501845980.

The previous prime is 13005620591. The next prime is 13005620723. The reversal of 13005620666 is 66602650031.

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

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, 465200 + ... + 492363.

It is an arithmetic number, because the mean of its divisors is an integer number (2438915508).

Almost surely, 2^13005620666 is an apocalyptic number.

13005620666 is a deficient number, since it is larger than the sum of its proper divisors (6505703398).

13005620666 is an equidigital number, since it uses as much as digits as its factorization.

13005620666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964356.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 13005620666 in words is "thirteen billion, five million, six hundred twenty thousand, six hundred sixty-six".