17342144865 has 12 divisors (see below), whose sum is σ = 30059717844. Its totient is φ = 9249143904.

The previous prime is 17342144849. The next prime is 17342144909. The reversal of 17342144865 is 56844124371.

It can be written as a sum of positive squares in 2 ways, for example, as 9338516496 + 8003628369 = 96636^2 + 89463^2 .

It is not a de Polignac number, because 17342144865 - 2⁴ = 17342144849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 385380997 = 17342144865 / (1 + 7 + 3 + 4 + 2 + 1 + 4 + 4 + 8 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 17342144865.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192690454 + ... + 192690543.

It is an arithmetic number, because the mean of its divisors is an integer number (2504976487).

Almost surely, 2^17342144865 is an apocalyptic number.

17342144865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

17342144865 is a deficient number, since it is larger than the sum of its proper divisors (12717572979).

17342144865 is a wasteful number, since it uses less digits than its factorization.

17342144865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385381008 (or 385381005 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 17342144865 in words is "seventeen billion, three hundred forty-two million, one hundred forty-four thousand, eight hundred sixty-five".