1316206640065 has 16 divisors (see below), whose sum is σ = 1648364289408. Its totient is φ = 1007034690816.

The previous prime is 1316206640009. The next prime is 1316206640071. The reversal of 1316206640065 is 5600466026131.

It is not a de Polignac number, because 1316206640065 - 2¹¹ = 1316206638017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68424 + ... + 1623913.

It is an arithmetic number, because the mean of its divisors is an integer number (103022768088).

Almost surely, 2^{1316206640065} is an apocalyptic number.

It is an amenable number.

1316206640065 is a deficient number, since it is larger than the sum of its proper divisors (332157649343).

1316206640065 is a wasteful number, since it uses less digits than its factorization.

1316206640065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699128.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 1316206640065 in words is "one trillion, three hundred sixteen billion, two hundred six million, six hundred forty thousand, sixty-five".