1299585107666 has 8 divisors (see below), whose sum is σ = 1949391499440. Its totient is φ = 649787941188.

The previous prime is 1299585107663. The next prime is 1299585107669. The reversal of 1299585107666 is 6667015859921.

It is an interprime number because it is at equal distance from previous prime (1299585107663) and next prime (1299585107669).

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

It is not an unprimeable number, because it can be changed into a prime (1299585107663) 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, 1942676 + ... + 2524511.

It is an arithmetic number, because the mean of its divisors is an integer number (243673937430).

Almost surely, 2^{1299585107666} is an apocalyptic number.

1299585107666 is a deficient number, since it is larger than the sum of its proper divisors (649806391774).

1299585107666 is a wasteful number, since it uses less digits than its factorization.

1299585107666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4612648.

The product of its (nonzero) digits is 48988800, while the sum is 65.

The spelling of 1299585107666 in words is "one trillion, two hundred ninety-nine billion, five hundred eighty-five million, one hundred seven thousand, six hundred sixty-six".