11661362565323 has 16 divisors (see below), whose sum is σ = 11955328660800. Its totient is φ = 11367853824000.

The previous prime is 11661362565319. The next prime is 11661362565337. The reversal of 11661362565323 is 32356526316611.

It is a cyclic number.

It is not a de Polignac number, because 11661362565323 - 2² = 11661362565319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11661362565313) 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, 396643778 + ... + 396673176.

It is an arithmetic number, because the mean of its divisors is an integer number (747208041300).

Almost surely, 2^{11661362565323} is an apocalyptic number.

11661362565323 is a deficient number, since it is larger than the sum of its proper divisors (293966095477).

11661362565323 is a wasteful number, since it uses less digits than its factorization.

11661362565323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36838.

The product of its digits is 3499200, while the sum is 50.

The spelling of 11661362565323 in words is "eleven trillion, six hundred sixty-one billion, three hundred sixty-two million, five hundred sixty-five thousand, three hundred twenty-three".