1299585107665 has 16 divisors (see below), whose sum is σ = 1679605131456. Its totient is φ = 959612875200.

The previous prime is 1299585107663. The next prime is 1299585107669. The reversal of 1299585107665 is 5667015859921.

It is not a de Polignac number, because 1299585107665 - 2¹ = 1299585107663 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1299585107597 and 1299585107606.

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 15 ways as a sum of consecutive naturals, for example, 56971 + ... + 1613200.

It is an arithmetic number, because the mean of its divisors is an integer number (104975320716).

Almost surely, 2^{1299585107665} is an apocalyptic number.

It is an amenable number.

1299585107665 is a deficient number, since it is larger than the sum of its proper divisors (380020023791).

1299585107665 is a wasteful number, since it uses less digits than its factorization.

1299585107665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682160.

The product of its (nonzero) digits is 40824000, while the sum is 64.

The spelling of 1299585107665 in words is "one trillion, two hundred ninety-nine billion, five hundred eighty-five million, one hundred seven thousand, six hundred sixty-five".