21611173314365 has 8 divisors (see below), whose sum is σ = 25933710048000. Its totient is φ = 17288737270992.

The previous prime is 21611173314349. The next prime is 21611173314371. The reversal of 21611173314365 is 56341337111612.

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

It is a cyclic number.

It is not a de Polignac number, because 21611173314365 - 2⁴ = 21611173314349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24699569 + ... + 25559558.

It is an arithmetic number, because the mean of its divisors is an integer number (3241713756000).

Almost surely, 2^{21611173314365} is an apocalyptic number.

It is an amenable number.

21611173314365 is a deficient number, since it is larger than the sum of its proper divisors (4322536733635).

21611173314365 is an equidigital number, since it uses as much as digits as its factorization.

21611173314365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50345131.

The product of its digits is 272160, while the sum is 44.

The spelling of 21611173314365 in words is "twenty-one trillion, six hundred eleven billion, one hundred seventy-three million, three hundred fourteen thousand, three hundred sixty-five".