1313426664165 has 32 divisors (see below), whose sum is σ = 2620030334976. Its totient is φ = 545839652160.

The previous prime is 1313426664157. The next prime is 1313426664181. The reversal of 1313426664165 is 5614666243131.

It is a happy number.

It is not a de Polignac number, because 1313426664165 - 2³ = 1313426664157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 568581817 + ... + 568584126.

It is an arithmetic number, because the mean of its divisors is an integer number (81875947968).

Almost surely, 2^{1313426664165} is an apocalyptic number.

1313426664165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1313426664165 is a deficient number, since it is larger than the sum of its proper divisors (1306603670811).

1313426664165 is a wasteful number, since it uses less digits than its factorization.

1313426664165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137165969.

The product of its digits is 1866240, while the sum is 48.

The spelling of 1313426664165 in words is "one trillion, three hundred thirteen billion, four hundred twenty-six million, six hundred sixty-four thousand, one hundred sixty-five".