11726470326665 has 8 divisors (see below), whose sum is σ = 14071865706888. Its totient is φ = 9381108718080.

The previous prime is 11726470326647. The next prime is 11726470326673. The reversal of 11726470326665 is 56662307462711.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 77928630649 + 11648541696016 = 279157^2 + 3412996^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-11726470326665 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11726470326665.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7672616 + ... + 9073145.

It is an arithmetic number, because the mean of its divisors is an integer number (1758983213361).

Almost surely, 2^{11726470326665} is an apocalyptic number.

It is an amenable number.

11726470326665 is a deficient number, since it is larger than the sum of its proper divisors (2345395380223).

11726470326665 is a wasteful number, since it uses less digits than its factorization.

11726470326665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16885819.

The product of its (nonzero) digits is 15240960, while the sum is 56.

The spelling of 11726470326665 in words is "eleven trillion, seven hundred twenty-six billion, four hundred seventy million, three hundred twenty-six thousand, six hundred sixty-five".